Possible Fault Causes
Catalyst contaminated (rich exhaust gas at O2 sensor during overrun injection deactivation); oil or gasoline in exhaust gases during overrun injection deactivation; defective wiring. Defective before catalytic converter sensor.
Catalyst contaminated (rich exhaust gas at O2 sensor during overrun injection deactivation); oil or gasoline in exhaust gases during overrun injection deactivation; defective wiring. Defective before catalytic converter sensor.