P0133

P0133

Diagnosis information - DME V8 DFI

Oxygen sensor ahead of cat. converter, bank 1, dynamic response

Diagnostic conditions
- Engine at operating temperature
- All 4 oxygen sensors ready for operation (engine running > 2 minutes)
- then > 10 minutes steady driving in middle rpm and load range
(engine speed 1,184 ... 3200 rpm + mass air flow 165 ... 600 mg/stk)
- No overrun fuel shutoff

Possible fault causes
- Oxygen sensor faulty (old)