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Monday, February 26, 2007

Engine Trouble Code P1345

DTC P1345 Crankshaft Position (CKP)-Camshaft Position (CMP) Correlation Circuit Description This diagnostic trouble code (DTC) monitors the crankshaft position (CKP) and the camshaft position (CMP) signals to determine if they are synchronized. If both signals are not observed by the control module within a narrow time window, the vehicle control module (VCM) will determine that an error has occurred. Conditions for Running the DTC The engine is running Conditions for Setting the DTC When the engine is running, the cam sensor reference pulse is not detected at the correct position relative to the crankshaft position sensor pulse. Action Taken When the DTC Sets The control module illuminates the malfunction indicator lamp (MIL) the first time the diagnostic runs and fails. The control module will set the DTC and records the operating conditions at the time the diagnostic fails. The control module stores the failure information in the scan tools Freeze Frame/Failure Records. Conditions for Clearing the MIL or DTC The control module turns OFF the MIL after 3 consecutive drive trips when the test has run and passed. A history DTC will clear if no fault conditions have been detected for 40 warm-up cycles. A warm-up cycle occurs when the coolant temperature has risen 22°C (40°F) from the startup coolant temperature and the engine coolant reaches a temperature that is more than 70°C (158°F) during the same ignition cycle. Use a scan tool in order to clear the DTCs. Diagnostic Aids Check the following items: A loose CMP sensor causing a variance in the sensor signal Excessive free play in the timing chain and gear assembly Incorrectly installed distributor - 1 tooth off in either advance or retard positions A loose distributor rotor on the distributor shaft A loose or missing distributor hold down bolt An intermittent may be caused by any of the following conditions: A poor connection Rubbed through wire insulation A broken wire inside the insulation

7 comments:

  1. when my 2003 trailblazer 4.2l heats up. when i come to stop it wants to die, but runes fine when i drive it

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  2. 2004 chev colorado pulls to left at high speeds and steering wheel inches to the left at low speeds. Air pressure and wheel allignment seem fine. Power steering problems?

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  3. 2004 chevy colorado pulls to left at high speeds and steering wheel inches to the left at low speeds. Air pressure and wheel allignment seem fine. Power steering problems?

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  4. I have replaced the CMS 3 times in the passed 4 years and again have the MIL, sending P1345 & P0014. Last time (after I replaced the CMS) I spoke with GM dealership regarding the two codes, the combination of the codes is a dirty throttle body.

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  5. The following problems are on a 97 z71 with a 5.7 liter v8 automatic trans obd2 ecu- I'm getting a p1345 that I clear every time iv tried to find the problem... any one out there have any usefully info pleas let me know. Her is the problem it think is related to the code... When the engine is cold it runs smoothly but is lacking a little on power... Once it is up to temp it slowly starts loosing power and slowly brings on a rough idle at a stop and sometimes when rpms decrease... Now for all the things I have considered... Iv replaced the cam and crank censors I have replaced the coolant temp censor I have replace plugs, wires, cap, and rotor iv checked all censor wires and connections, iv cleaned all 4 o2 censors... It's hard for me to believe its the timing chain because the truck runs fine up till 10 min after start up...

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    1. same trouble over here. gonna pull my timing chain cover in a bit check for slack in the chain. my truck has been doin it for years but i've been gettin by. I think it will come down to 480000 kms and engine wear. seems like i should of just thrown in a crate motor rather than cut ten years off my life because of grief i've had with this problem

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  6. i have a 2002 bmw and the p1345 code means oxygen sensor bad...my car has 4 and its telling me its the one after the cat converter

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