DTC P0178 Cadillac
Fuel Trim System Rich (Bank 2)
Fuel Trim System Rich (Bank 2)
Description
The engine run time is more than 30 seconds. The ignition voltage is more than 10.9 volts.
Cause and Solution
The hertz and millisecond parameters react immediately to any change in the FCS circuits, but may not react long enough to set this DTC.
A reading of 16 Hz in the Freeze Frame Failure Records indicates a circuit failure.
Video Guide
Diagnostic Info
- DTC Code: P0178
- Brand: Cadillac