DTC P0340: Notes

DTC P0340 [L3] CHART

DTC P0340	CMP sensor circuit problem
DETECTION CONDITION	The PCM monitors input voltage from the CMP sensor when the engine is running. If the CMP sensor signal timing inferred from the CKP sensor signal has deviated, PCM determines that CMP circuit has malfunction. Diagnostic support note This is a continuous monitor (CCM). MIL illuminates if the PCM detects the above malfunction condition during the first drive cycle. FREEZE FRAME DATA is available. DTC is stored in the PCM memory.
POSSIBLE CAUSE	CMP sensor malfunction Connector or terminal malfunction CMP sensor is dirty Short to power supply in wiring harness between CMP sensor terminal A and PCM terminal 2V Short to power supply in wiring harness between CMP sensor terminal B and PCM terminal 2U Short to ground in wiring harness between CMP sensor terminal A and PCM terminal 2V Short to ground in wiring harness between CMP sensor terminal B and PCM terminal 2U Open circuit in wiring harness between CMP sensor terminal A and PCM terminal 2V Open circuit in wiring harness between CMP sensor terminal B and PCM terminal 2U CKP sensor pulse wheel malfunction Both CMP sensor wires are shorted each other CKP sensor mis-installation Timing chain mis-installation Loose timing chain or improper valve timing due to chain jumping Loose camshaft sprocket lock bolt Loose crankshaft pulley lock bolt PCM malfunction