|
Fault: Bank 2 pre-catalyst oxygen sensor pumping current calibration error
Techy stuff:
* Engine temperature > K_LAVK_OBD_TMOT * Sensor temperature > K_LAVK_OBD_VK_TEMP * since recognition of overrun an air mass flow of K_LAVK_OBD_SA_ML_SUM must have occurred
Terminal condition: Engine running - status overrun cutoff
In English for you:
This fault happens when Oxygen sensor is available and communicating BUT sensor voltage > K_LAVK_OBD_SA_DIAG_OL (meaning the value reported by the sensor is higher than a preset limit imposed by the DME, therefore the signal is not within specified/acceptable ranges.)
What you should do:
1. Check plug and wiring harness to pre-catalyst oxygen sensor forward of Bank 2 catalyst (especially IA trim wire)
2. If OK, replace oxygen sensor and you should be good to go
|