DTC P2097 Alfa Romeo
Post Catalyst Fuel Trim System Too Rich Bank 1
Post Catalyst Fuel Trim System Too Rich Bank 1
Description
The value of the downstream fuel trim is compared with the rich thresholds. Every time the value exceeds the calibrated threshold, a fail timer increments and mass flow through the exhaust is accumulated. If the fail timer and accumulated mass flow exceed the fail thresholds, the test fails and the diagnostic stops running for that trip. It takes two consecutive failed trips to set a DTC.
Cause and Solution
Exhaust System Leak
Upstream O2 Sensor Wiring Issue
Upstream O2 Sensor
Downstream O2 Sensor Wiring Issue
Downstream O2 Sensor
Powertrain Control Module (Pcm)
Related Service Bulletins:
View Bulletin 1
Video Guide
Diagnostic Info
- DTC Code: P2097
- Brand: Alfa Romeo