2. Clean fuel injectors (ultrasonic cleaning device) or replace them.
Oxygen Sensing Adaptation, Upper Load Range, Bank 2 - Below Limit
P1132
Oxygen Sensing Adaptation, Upper Load Range, Bank 1 - Below Limit
Function
The adaptive oxygen sensing system corrects longer lasting deviations in the fuel/air mixture from lambda = 1 by changing the anticipatory control
calculated in the DME control module and the injection timing altered as a result.
Should the correction factor through adaptation exceed a predetermined value, the diagnosis will detect the adaptation threshold.
Diagnosis conditions
- Oxygen sensing system active
- Time elapsed after engine start-up:
250 to 350 seconds (USA)
302 to 402 seconds (RoW)
- Engine temperature > 62 锟斤拷C
- Intake air temperature < 90 锟斤拷C
- Air mass flow > 180 kg/h
- Load signal > 26 %
P1125 - P1132
NOTE:
- If DTC P0445 (EVAP canister purge valve - short to ground) is stored in the memory, correct this fault first. An open EVAP canister purge
valve can lead to the lean threshold being reached.
- For vehicles in the USA, the upper load range will probably not be reached. The only case in which a fault could be stored is during driving
while towing a trailer or caravan on a hill.
- If the fuel tank reserve light is switched on, no fault is entered.