DTC P0340-00: Intake CMP Sensor Circuit Problem: Notes

WARNING: This page is about a different variant/trim than selected.

DTC P0340:00 (PCM, VIN Y) DETECTION CONDITION AND POSSIBLE CAUSE

DTC P0340:00	Intake CMP sensor circuit problem
DETECTION CONDITION	The intake CMP sensor input signal pattern, received while the crankshaft rotates 24 times, is incorrect. Diagnostic support note This is a continuous monitor (CCM). The check engine light illuminates if the PCM detects the above malfunction condition during the first drive cycle. FREEZE FRAME DATA/Snapshot data is available. DTC is stored in the PCM memory.
FAIL-SAFE FUNCTION	Sets the electric variable valve timing control to the maximum cam retard mode. Inhibits traction control.
POSSIBLE CAUSE	Intake CMP sensor connector or terminals malfunction Short to ground or open circuit in intake CMP sensor power supply circuit Short to ground in wiring harness between ENGINE 115 A fuse and intake CMP sensor terminal C ENGINE 115 A fuse malfunction Open circuit in wiring harness between main relay terminal C and intake CMP sensor terminal C Short to ground in wiring harness between intake CMP sensor terminal A and PCM terminal 1V PCM connector or terminals malfunction Short to power supply in wiring harness between intake CMP sensor terminal A and PCM terminal 1V Intake CMP sensor signal circuit and ground circuit are shorted to each other Open circuit in wiring harness between the following terminals: Intake CMP sensor terminal A-PCM terminal 1V Intake CMP sensor terminal B-PCM terminal 1S Intake CMP sensor malfunction Intake CMP sensor is dirty Intake CMP sensor pulse wheel malfunction Damage to the detection area of the intake CMP sensor CKP sensor connector or terminals malfunction Loose timing chain or improper valve timing PCM malfunction
Courtesy of MAZDA MOTORS CORP.