P0014 code chevy colorado

P0014 code chevy colorado. P0014 is a relatively common trouble code for vehicles that have Variable Valve Timing (VVT). This includes the Chevy Silverado. VVT adjusts the position of the camshaft(s) to maximize the combustion efficiency of the motor. P0014 means that the camshaft position is too far advanced from where it should be in relation to normal operating

End result to resolve a pesky P0013/P0014 code.. Flush oil system, replace variable timing solenoid and drive for at least 150 miles and reset the computer. Sent from AutoGuide ... A forum community dedicated to Chevy Colorado and GMC Canyon owners and enthusiasts. Come join the discussion about performance, modifications, …

Check engine light code P0024. My truck is a 2018 Chevy Colorado V-6, Z71, 4 wheel drive with 40,000 miles on it. I have been getting an intermittent check engine code #P0024 which my research is telling me means that the "cam shaft position sensor is too advanced or too retarded". My mechanic tells me this means that I have a "sticky solenoid ...FIX CODE P0013 P0014 P2091 CAMSHAFT POSITION ACTUATOR CHEVY ,CHEVROLET, GMC, BUICK, CADILLAC Car Scanner: https://amzn.to/2G5lxTi Check out our Amazon Stor...The powertrain control module (PCM) uses the crankshaft position (CKP) sensor and the exhaust camshaft position (CMP) sensor information to monitor the correlation between the crankshaft and camshaft positions. If the PCM detects a CMP sensor pulse occurs during the incorrect CKP, DTC P0017 will set. occasionally the engine light comes on but ...1. 2. 3. 4. 5. 6. 7. 8. 9 views 7 hours ago. Does your Colorado/Canyon with a 2.8L or 3.7L engine keep setting codes P0014 or P0017? This video covers the …1st Generation Chevrolet Colorado and GMC Canyon. 1st Gen Care - Cleaning / Detailing / Maintenance Fixing Camshaft Position Sensor p0365 & P0366 Codes ... I have recently popped these two codes on my 04 Colorado, and after clearing them, they come right back. ... im getting the codes P0010, P0365, P0366, P0014, …P0014 is a relatively common trouble code for vehicles that have Variable Valve Timing (VVT). This includes the Chevy Silverado. VVT adjusts the position of the camshaft(s) to maximize the combustion efficiency of the motor. P0014 means that the camshaft position is too far advanced from where it should be in relation to normal operatingColly_shifter. 422 posts · Joined 2010. #5 · Aug 18, 2015 (Edited) Gentlemen, if you have replaced the PCM, crankshaft sensor, cam position sensor or even the engine itself on the truck, you're going to have to have a CASE relearn done to resolve the P0017 code or any other associated codes, like P0315. If you're having issues with the P0017 ...Mar 11, 2020 · FIX CODE P0013 P0014 P2091 CAMSHAFT POSITION ACTUATOR CHEVY ,CHEVROLET, GMC, BUICK, CADILLAC Car Scanner: https://amzn.to/2G5lxTi Check out our Amazon Stor...

Chevrolet Codes; Trouble Code Fault Location Probable Cause; B1325: Control Module Power Circuit Low/High Voltage: P0014: Camshaft position (CMP) exhaust/right/rear, bank 1 -timing over -advanced/system performance: P0171: System too lean, bank 1: Intake/exhaust leak, AIR system, MAFNAF sensor, fuel pressure/pump, injector(s), HO2S: Been throwing a P0014 (B Camshaft Position Sensor Timing - Over-Advanced) code off and on for a few months. Took it to 2 different Chevrolet dealerships and one did an oil change and said to take it to the Dealership where I bought it. Oct 25, 2018 · October 13, 2022 by Jason. P0011 is a common (and serious) OBD II diagnostic trouble code that can occur in the Chevy Colorado. It indicates an issue with your truck’s Variable Valve Timing (VVT) system. The first thing you should do when you have this code is check your Colorado’s oil. If the oil level is too low, the camshaft actuators ... Jan 6, 2009 · So I borrowed a code reader and found P0017 and P0300 codes coming up. P0017: Cam/Crankshaft Pos. Correlation Sensor B - Bank 1. P0300: Random/Multiple Cylinder Misfire detected. Before I take it to a mechanic to get checked out, any similar experiences and/or fixes that anyone knows of would be much appreciated! If this DTC shows up on a Chevy Colorado or GMC Canyon pickup, and you have a P0014 DTC at the same time, go here for a possible solution: Denlors Auto Blog » Blog Archive » Chevy P0017 CAM/Crankshaft Position Correlation . ... My P0017 code pops up about every 3-4 weeks and stays on until it has been restarted about 5-6 times, (with …1. 2. 3. 4. 5. 6. 7. 8. 9 views 7 hours ago. Does your Colorado/Canyon with a 2.8L or 3.7L engine keep setting codes P0014 or P0017? This video covers the …Chevrolet Colorado 2008 3.7 car runs ok for several weeks , then sudenly stall have rough idle and die , could run or not inmediatly , and after that continues runs fine for a couple of weeks , ... changed cam sensor & no change then changed crank sensor & idle smoothed out only for about ten miles now its throwing codes p0014 & p0017 its an …

What Does The P0014 Error Code Mean? The Powertrain Control Module (PCM) sets the P0014 error code when it detects a difference between the desired …The great American sports car is going electric. GM shared the news this morning, and released the first images of the upcoming electric Chevrolet Corvette. The great American spor...The first step to decoding the Chevy engine block code is to locate and identify the code on the engine assembly stamp correctly. Next understand the block code. The code has 15 ch...Mar 2, 2022 · Codes p0011, p0014, p0017 help. Jump to Latest Follow. 5K views 6 replies 4 participants last post by drz400dude Jan 14, 2023. Just_Truck_it! Discussion starter. 4 posts · Joined 2020. #1 · Mar 2, 2022. 2018 Colorado zr2 v6 is showing these codes. Dealership said $2300 to replace Camshaft pos sensors, VVT solenoids, and crank shaft pos sensor. Chevy Colorado starting issue code P0340 and P0341 solved!

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212 posts · Joined 2008. #1 · Oct 14, 2008. My truck keeps throwing P0014 exhaust cam position timing over advanced bank 1. I cleared it about a week ago and drove over 100 miles through out the week then today i check the computer and it had reset to good emissions status so i took it to get it inspected. on the way there the light came back ...I have recently popped these two codes on my 04 Colorado, and after clearing them, they come right back. ... the codes P0010, P0365, P0366, P0014, P0024 & P0346 ...There are three ways that it can cause P0014: Low Oil: The most common cause of P0014 is low oil. The oil level needs to be low enough to lower the engine’s oil pressure (dangerously low). If oil flow slows down enough to throw the p0014 code, It’s likely low enough to lock up the engine.Apr 6, 2007 · 27 posts · Joined 2007. #3 · Jun 7, 2007. well, 2000 miles after my 5w30 oil change, my truck heads back to the dealer for the 5th time for a p0014 code, with rough idle. 2 hours after droping it off i get a call and they tell me excessive crankshaft end play is the cause of the problem. So they are going to pull the motor, dissassemble it ...

About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features NFL Sunday Ticket Press Copyright ...P0411: Secondary Air Injection System → Incorrect Flow Detected. The secondary air injection system injects air into the exhaust to help lower emissions. Most of the time, P0411 is going to be caused by a failure in this pump or the one way check valve. But there can be other reasons the code is thrown as well.Jan 8, 2019 · P0017 should be considered an important trouble code to diagnose and repair. The crank and cam sensors work in tandem to produce the ideal air/fuel ratio for your engine. When this timing is off, the engine will typically not run (or barely run). Here are the major symptoms of P0017 in the Colorado: Failure to start. Rattle coming from the motor. FIX CODE P0036 P0054 P0137 P0138 P0141 ENGINE LIGHT CHEVY, CHEVROLET, GMC, BUICK, CADILLAC Car Scanner: https://amzn.to/2G5lxTi Oxygen Sensor Socket: https...A prevalent issue with the Chevy Colorado is the P0446 code. This code corresponds to a specific number obtained when connecting your Colorado to an OBDII scanner. A faulty vent control valve most commonly causes P0446. Table of Contents Definition Symptoms Causes Diagnosis How to Fix P0446 Definition P0446 is a …Been throwing a P0014 (B Camshaft Position Sensor Timing - Over-Advanced) code off and on for a few months. Took it to 2 different Chevrolet dealerships and one did an oil change and said to take it to the Dealership where I bought it.The solenoid controls the amount of engine oil flow to a CMP actuator. The CMP actuator can change the camshaft angle a maximum of 25 degrees. The control module increases the pulse width to accomplish the desired camshaft operation. Read more: Code P0014 GMC: Exhaust Camshaft Position System Performance (With Video) 2017 …Jun 20, 2020 · P0014 is the OBD-II generic code that the engine control module (ECM) has determined that the bank 1 exhaust camshaft is more advanced than what the ECM has commanded it be. This over-advanced condition could be during advancing or retarding of the camshaft timing. You know, maybe it is the muffler bearing or the timing chain in the rear ... Few things are as annoying as turning the key in your truck and finding it will not start. There are many problems that can result in a Chevy Silverado's failure to start, making d...42K views 2 years ago. Step by step instructions to replace a camshaft position solenoid valve, also known as a VVT. This video is on a 2018 Chevrolet Colorado 3.6 with a code …Any and all discussion related to the Chevy Colorado. ... About a week ago I got a consistent P0014 code and finally decided to swap out the VVT valve (codriver side, position "B" exhaust). It's the outermost valve closer to the tire and it was a quick swap, used part #12687167 from Rockauto. Nothing so far seems to be wrong with the old valve from …U. Unfettered. 3173 posts · Joined 2009. #19 · Jun 7, 2015. My P0017 code pops up about every 3-4 weeks and stays on until it has been restarted about 5-6 times, (with at least 1/2 hour between shutdown and startup). I too have replaced the obvious part (OEM and Aftermarket) and it seems to have calmed down some.

P0017 code on 08 2.9L V4 Colorado. My 2008 2.9L V4 Colorado, with around 135,000 miles, has the P0017 code on it and I cant get rid of it. The check engine light use to come on and go off, now it has been on and does not go off. I have replaced the Camshaft Position Sensor with ACDelco 213-4223, Crankshaft Position Sensor with …

Bought a 2019 Chevy Colorado LT, and it’s been great! The problems I’ve had: CarPlay crashing (heard GM issue, not very common), doesn’t bother me enough. Shudder - replaced transmission fluid and issue resolved. Rough idle - I suspect it’s the evap valve or related to p0014Nov 23, 2018 · There are three ways that it can cause P0014: Low Oil: The most common cause of P0014 is low oil. The oil level needs to be low enough to lower the engine’s oil pressure (dangerously low). If oil flow slows down enough to throw the p0014 code, It’s likely low enough to lock up the engine. Hard starting. Rough acceleration. Performance issues. Stalling engine. Causes of the P0014 Code. The most common cause of …A prevalent issue with the Chevy Colorado is the P0446 code. This code corresponds to a specific number obtained when connecting your Colorado to an OBDII scanner. A faulty vent control valve most commonly causes P0446. Table of Contents Definition Symptoms Causes Diagnosis How to Fix P0446 Definition P0446 is a …Jan 4, 2019 · P0016 Symptoms. P0016 should be considered an important trouble code to diagnose and repair. The crank and cam sensors work in tandem to produce the ideal air/fuel ratio for your engine. When this timing is off, the engine will typically not run (or barely run) Here are the major symptoms of P0016 in the Colorado: Failure to start. FIX CODE P0365 CAMSHAFT POSITION SENSOR CHEVY, CHEVROLET, GMC, BUICK, CADILLAC Car Scanner: https://amzn.to/2G5lxTi Check out our Amazon Store for the tool...Upon trying to chase and resolve code P0017 and P0019 I was led to replacing the Camshaft Position Actuator Solenoid Valve, banks 1 & 2 Exhaust, respectively... Bought a 2019 Chevy Colorado LT, and it’s been great! The problems I’ve had: CarPlay crashing (heard GM issue, not very common), doesn’t bother me enough. Shudder - replaced transmission fluid and issue resolved. Rough idle - I suspect it’s the evap valve or related to p0014

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Dec 20, 2019 · The dealership kept it for a day and tried to replicate the issue but couldn’t find anything and they stated they had never heard of this code. Here is what I found online about P0019 “P0019 is the OBD-II generic code indicating that the crankshaft and Variable Valve Timing (VVT) position sensor B for bank 2 exhaust camshaft does not ... Install a new camshaft actuator associated with the code(s). Evaluate the vehicle and monitor the camshaft actuator activity. There is a factory service bulletin for the following Chevrolet models: 2004-2009 Chevrolet TrailBlazer 2004-2012 Chevrolet Colorado Chevrolet TrailBlazer, Colorado Factory Service Bulletin OBDII Code P0014I just change mine last month.. same code and bank 2.. bought the cam shaft solenoid on chevy for $60 cdn x2.. and my truck is 2017 z71 too but we used 2018 parts,. I tried to install 2017 parts but will not fit.2018 Z71 P0014 code upvotes r/chevycolorado. r/chevycolorado. Any and all discussion related to the Chevy Colorado. Members Online. Finally was able to snag a zr2! 2. upvotes · comments. r/chevycolorado. r/chevycolorado ... Any and all discussion related to the Chevy Colorado. Members Online. Just got this bad boy 5. upvotes ...Dec 14, 2019 · About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features NFL Sunday Ticket Press Copyright ... Oct 14, 2008 · 212 posts · Joined 2008. #1 · Oct 14, 2008. My truck keeps throwing P0014 exhaust cam position timing over advanced bank 1. I cleared it about a week ago and drove over 100 miles through out the week then today i check the computer and it had reset to good emissions status so i took it to get it inspected. on the way there the light came back ... The 2020 Chevrolet Silverado is a fabulous choice if you’re searching for a reliable full-size pickup truck. Why? Because the Silverado is ranked in third place on the US News site...This page is meant to help you troubleshoot the Chevy Colorado P0420 trouble code. It covers the P0420 code's meaning, symptoms, causes, and possible solutions. P0420 is the most common OBDII code and is virtually never a breakdown risk. A failing oxygen sensor or bad catalytic converter are the most common causes of P0420. Table ….

cart7881. The oil light and the message "oil" indicate low oil pressure. The P0014 is set because the Camshaft Position Actuator operates off of oil pressure. The oil pump may be worn. I would , as 08Canyon suggested, change the oil/filter and insure that the oil level is at full on the dipstick.Chevy Mechanic: Anthony Sorrento. Okay. Next step, we will need a test light. Engine off. Unplug the camshaft actuator solenoid. Connect a test light between the actuator solenoid high control circuit (brown wire) and the other end on a good ground. Start the engine. Command cam phase solenoid to 50 percent.Get ratings and reviews for the top 10 window companies in Colorado Springs, CO. Helping you find the best window companies for the job. Expert Advice On Improving Your Home All Pr...The P0014 code is usually related to bad camshaft timing. Specifically, the problem is in the camshaft in bank B1 on position B. Bank 1 refers to the part of the engine with a first cylinder. Position B is the camshaft exhaust either at the rear or the right part of the engine, looking from the driver’s side.It’s official: a fully electric Chevy Corvette is coming — with new battery technology to boost its range, acceleration and efficiency. When it arrives, the battery-electric sports...The first step to decoding the Chevy engine block code is to locate and identify the code on the engine assembly stamp correctly. Next understand the block code. The code has 15 ch...#1 · May 25, 2010. P0014 exhaust cam position timing over advanced bank 1. 2006 Colorado I5 3.5 4x4. I keep on getting this code when I am getting low on gas. When I …This video includes the followings:- Wiring diagram analysis- VVT solenoid (OCV) power supply test - VVT solenoid (OCV) Actuation test on the engine- VVT sol... P0014 code chevy colorado, Please Help, my engine is knocking And p0014 codes coming up. 2007 Chevy Colorado lt 3.7 Jump to Latest Follow 5K views 12 replies 6 participants last post by 82-454 Aug 14, 2020, 2004 Chevrolet Colorado Pickup - 2WD. Subject: Rough Idle with DTC P0014 and/or P0017 - Inspect Cam Actuator Solenoid Screens and Crank End Play. Condition/Concern: On rare occasions, a rough idle may be encountered with a P0014 and/or P0017 DTC. Due to the rough idle, a P0106 DTC may be stored too. This concern may be due to debris in the ..., About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features NFL Sunday Ticket Press Copyright ..., Vehicule: 2017 V6 3.6, LGZ, Colorado. DTC: P0014 P0011 P0021 P0024. Symptoms: Cylinder misfire. Rough idle. MPG loss. Note: Sometimes the symptoms are not noticeable and there´s only a CEL light. Scanner results: DTC P0011 - Intake Camshaft Position System Performance Bank 1., When the cam timing is off, it can cause some issues with the motor. Here are some of the typical symptoms of P0014 in the Chevy Colorado: 1. Poor Idle Quality– If the “B” camshaft actuator fails while it is too far advanced, it’ll idle roughly. 2. Rattling Sound– You may hear the camshaft actuator rattling at idle … See more, Aug 25, 2006 · DTC Descriptor. This diagnostic procedure supports the following DTC: DTC P0014 Exhaust Camshaft Position (CMP) System Performance. Conditions for Running the DTC. * The engine speed is greater than 1,350 RPM. * The PCM has enabled the cam phaser. * The system voltage is greater than 11 volts. , Add a Comment. heavylinetech • 2 yr. ago. I believe there a tsb on this issue. You might want to look it up but I think you replace the camshaft position actuator and do an oil change. If you replace the actuator, check to see if oil got into the engine harness because that will cause check engine lights. 3., Code Number Code Description Related Codes; P0014: Camshaft Position B* - Timing Over-Advanced or System Performance (Bank 1**) *Exhaust camshaft **Cylinder bank 1, There are three ways that it can cause P0014: Low Oil: The most common cause of P0014 is low oil. The oil level needs to be low enough to lower the engine’s oil pressure (dangerously low). If oil flow slows down enough to throw the p0014 code, It’s likely low enough to lock up the engine., 2016 White Colorado LT 2WD Ext. Cab. 3.6L V6 6 Spd. Automatic with Dipstick, Pedal Commander, BakFlip G2 Tonneau, Elite CC, Tow Mirrors, Cargo Floor, DeeZee Bed Mat, (-) Airdam, Tow Hooks, Towing Starcraft AR One 18QB TT, 1955 Chevrolet Bel Air 283 V8 3 Spd. Manual, 2002 Pontiac Trans Am 5.7L V8 6 Spd., 2016 White Colorado LT 2WD Ext. Cab. 3.6L V6 6 Spd. Automatic with Dipstick, Pedal Commander, BakFlip G2 Tonneau, Elite CC, Tow Mirrors, Cargo Floor, DeeZee Bed Mat, (-) Airdam, Tow Hooks, Towing Starcraft AR One 18QB TT, 1955 Chevrolet Bel Air 283 V8 3 Spd. Manual, 2002 Pontiac Trans Am 5.7L V8 6 Spd., The P0014 code is an OBD-II generic code related to the engine control module (ECM). ... My 2003 Chevrolet Trailblazer Has The Codes P0014 And P1345, What’s Wrong., A P0014. A P0014 code refers to the VVT (variable valve timing) or VCT (variable camshaft timing) components and the car's PCM (powertrain control module) … read more. Ron. Automotive Tech. Vocational, Technical or Tra... 43,989 satisfied customers. Check engine light code P0014 2004 chevy colorado., A prevalent issue with the Chevy Colorado is the P0446 code. This code corresponds to a specific number obtained when connecting your Colorado to an OBDII scanner. A faulty vent control valve most commonly causes P0446. Table of Contents Definition Symptoms Causes Diagnosis How to Fix P0446 Definition P0446 is a …, Chevy Colorado P0013: “B” Camshaft Position → Open/Short OCV → Bank 1. P0013 is a somewhat frequent OBDII trouble code. It is generic, which means that it has the same meaning for the Chevy Colorado, as it would any other vehicle. It only affects vehicles with Variable Valve Timing. Below we’ll outline the major symptoms and causes of ..., 5757 posts · Joined 2012. #2 · Mar 16, 2014. I don't think that the intake would be responsible for the DTC P0014. If the oil level and pressure are good, it could still be the Camshaft Position Actuator Solenoid Valve. There could be an electrical defect internally sending the incorrect signal to the ECM., This forum is great. As the title states, I've got a P0017, P0014, and a P0455 code tripping. Sometimes the P0014/7 trip with the P0455 - not sure if it is coincidence, or if they are related. PROBLEM #1: From researching here, I replaced the gas cap with a new one (non OEM) and reset the codes. But the 0455 code keeps coming back, usually ..., Dec 14, 2019 · About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features NFL Sunday Ticket Press Copyright ... , Jan 6, 2009 · So I borrowed a code reader and found P0017 and P0300 codes coming up. P0017: Cam/Crankshaft Pos. Correlation Sensor B - Bank 1. P0300: Random/Multiple Cylinder Misfire detected. Before I take it to a mechanic to get checked out, any similar experiences and/or fixes that anyone knows of would be much appreciated! , 2005 Chevy Colorado 36,600 miles 5 cylinder engine - Car idled rough with check engine light on. Diagnostic Codes P0014, P0017, P0122, P0223, P0300. Ran tests on the throttle body and the sensors in t … read more, The forthcoming Chevy Bolt and expected improvements in the Nissan Leaf will provide electric car owners with greatly increased driving range at affordable prices. By clicking "TRY..., On a warm late May morning with a refreshing breeze blowing, I entered the Garden of the Gods in Colorado Springs, CO. Share Last Updated on May 15, 2023 On a warm late May morning..., 2016 White Colorado LT 2WD Ext. Cab. 3.6L V6 6 Spd. Automatic with Dipstick, Pedal Commander, BakFlip G2 Tonneau, Elite CC, Tow Mirrors, Cargo Floor, DeeZee Bed Mat, (-) Airdam, Tow Hooks, Towing Starcraft AR One 18QB TT, 1955 Chevrolet Bel Air 283 V8 3 Spd. Manual, 2002 Pontiac Trans Am 5.7L V8 6 Spd., A P0014. A P0014 code refers to the VVT (variable valve timing) or VCT (variable camshaft timing) components and the car's PCM (powertrain control module) … read more. Ron. Automotive Tech. Vocational, Technical or Tra... 43,989 satisfied customers. Check engine light code P0014 2004 chevy colorado., 2005 Chevy Colorado 36,600 miles 5 cylinder engine - Car idled rough with check engine light on. Diagnostic Codes P0014, P0017, P0122, P0223, P0300. Ran tests on the throttle body and the sensors in t … read more, On a warm late May morning with a refreshing breeze blowing, I entered the Garden of the Gods in Colorado Springs, CO. Share Last Updated on May 15, 2023 On a warm late May morning..., P0014 is a diagnostic trouble code related to the variable timing of valves in the engine. It is a generic powertrain code, so it applies to OBD-II equipped vehicles with variable timing systems., 5757 posts · Joined 2012. #2 · Mar 16, 2014. I don't think that the intake would be responsible for the DTC P0014. If the oil level and pressure are good, it could still be the Camshaft Position Actuator Solenoid Valve. There could be an electrical defect internally sending the incorrect signal to the ECM., P0016, P0018 | Chevy Colorado & GMC Canyon https://www.coloradofans.com › p0016-p0018.414352 Feb 10, 2020 — Those are generic codes for Crankshaft/Camshaft position correlation. Is the truck running bad? ... I threw a P0014 Code and these selenoids can be really picky, first thing I would check before you …, 5757 posts · Joined 2012. #2 · Mar 16, 2014. I don't think that the intake would be responsible for the DTC P0014. If the oil level and pressure are good, it could still be the Camshaft Position Actuator Solenoid Valve. There could be an electrical defect internally sending the incorrect signal to the ECM., Install a new camshaft actuator associated with the code(s). Evaluate the vehicle and monitor the camshaft actuator activity. There is a factory service bulletin for …, 2006 COLORADO 3.5 P0014 CODE CHANGED CAM SENSOR, CAM SELENOID, CAM GEAR SPROCKET CODE STILL SETS ON SECOND DRIVE CYCLE - Answered by a verified Chevy Mechanic. We use cookies to give you the best possible experience on our website. ... will running a chevy colorado 2005 with p0014 code damage the truck and …, Add a Comment. heavylinetech • 2 yr. ago. I believe there a tsb on this issue. You might want to look it up but I think you replace the camshaft position actuator and do an oil change. If you replace the actuator, check to see if oil got into the engine harness because that will cause check engine lights. 3.