P2096

Test 1 - 3:

Test 4 - 6:

SYMPTOM
P2096-DOWN STREAM FUEL TRIM LEAN BANK 1

WHEN MONITORED
With the engine running in closed loop mode, the ambient/battery temperature above (-7 °C)20 °F, altitude below 8500 ft and fuel level greater than 15%.

SET CONDITION
If the PCM multiplies short term compensation by long term adaptive and a certain percentage is exceeded for two trips, a freeze frame is stored, the MIL illuminates and a trouble code is stored. Two Trip Fault. Three good trips to turn off the MIL.

POSSIBLE CAUSES
- Good trip equal to zero
- Exhaust leak
- Engine mechanical problem
- O2 sensor
- O2 signal circuit
- O2 return circuit
- Fuel contamination