DTC P0321 Cadillac
ICM 4X Reference Circuit Malfunction
ICM 4X Reference Circuit Malfunction
Description
DTC P0340 and P1376 not set, engine started, CMP sensor signal detected in the last 4 seconds, and the PCM did not detect any 4X fuel control pulses for 4 seconds in the test.
Cause and Solution
Fuel control signal circuit is open
Fuel control signal circuit is shorted to ground
IC module is damaged or has failed
PCM has failed
Video Guide
Diagnostic Info
- DTC Code: P0321
- Brand: Cadillac