DTC U1300 Cadillac
Cylinder 3 Misfire Detected
Cylinder 3 Misfire Detected
Description
Engine started, vehicle driven to over 3 mph at an engine speed of 400-3500 rpm, and the PCM detected irregular CKP sensor signals indicating a misfire condition in one cylinder was present during the 200-revolution or 1000-revolution Misfire Detection Monitor test. Note: If the misfire is severe, the MIL will flash on off on the 1st trip!
Cause and Solution
Base engine mechanical fault that affects only one cylinder Fuel metering fault that affects only one cylinder EGR valve is stuck open or the PCV system has a vacuum leak Ignition system fault (i. e. , a coil) that affects only one cylinder
Video Guide
Diagnostic Info
- DTC Code: U1300
- Brand: Cadillac