P1345high severityPowertrain
Crankshaft Position / Camshaft Position Correlation
on 2011 GMC Terrain 2.4L I4 · FWD
What this code means
The PCM detected that the crankshaft position sensor and camshaft position sensor signals are not in proper correlation. This code is most common on Vortec V8 and V6 engines with distributors, particularly the 5.7L, 5.0L, and 4.3L. On distributor-equipped engines, this is often caused by a worn distributor gear or incorrect timing.
Symptoms
- Check Engine Light
- Engine misfires
- Sputtering and hesitation
- Loss of power
- Difficulty exceeding low speeds
- Stalling
- Rough idle
- Hard starting
Common causes
- Worn distributor gear or bearing
- Incorrect distributor timing
- Faulty CKP or CMP sensor
- Stretched timing chain
- Jumped timing
- Worn camshaft reluctor wheel
Diagnostic steps
- Check distributor for excessive play or wear
- Verify ignition timing with timing light
- Test CKP and CMP sensor signals
- Inspect timing chain for stretch
- Compare cam and crank sensor waveforms with scope
Repair notes
On distributor-equipped engines (5.7L Vortec, 4.3L), check distributor gear and bearing first. Adjust distributor timing if equipped. On timing-chain engines, check chain stretch.
Other Powertrain codes on this vehicle
P0001
Fuel Volume Regulator Control Circuit/Open
P0002
Fuel Volume Regulator Control Circuit Range/Performance
P0003
Fuel Volume Regulator Control Circuit Low
P0004
Fuel Volume Regulator Control Circuit High
P0010
Intake Camshaft Position Actuator Circuit/Open Bank 1
P0011
Intake Camshaft Position Timing Over-Advanced Bank 1
P0012
Intake Camshaft Position Timing Over-Retarded Bank 1
P0013
Exhaust Camshaft Position Actuator Circuit/Open Bank 1
P0014
Exhaust Camshaft Position Timing Over-Advanced Bank 1
P0015
Exhaust Camshaft Position Timing Over-Retarded Bank 1