Porsche
Diagnostic and Repair Information ,Wiring Diagrams. DTC. TSB. Types: TSB, DTC, Wiring Diagrams, OEM Procedures. Trusted by more than 400,000 technicians. OEM accurate fix for faster repairs. Repair Procedures and Labor Times. Factory Auto Repair info. Request A Demo Today. Factory-Correct Diagrams. Factory Part Numbers. Maintenance Schedules. Repair Procedures. Labor Times. Types: TSB, DTC.car insurance, auto insurance, auto, car, vehicle, insurance, quote, quotes, online, insurance，auto, autos, car, cars, vehicle, vehicles, used car, pre-owned car, pre-owned vehicle, used auto, used vehicle, rental，auto racing news, car racing news
P0157
P0157
Diagnosis information - DME V6 DFI Oxygen sensor behind cat. conv., bank 2
NOTE: Do not use contact spray on the oxygen sensor's plug connections as this will result in irreparable damage to the lines (blockage of reference air duct).
NOTE: Do not interchange the oxygen sensor ahead of catalytic converter with the sensor behind the catalytic converter as this will result in implausible fault entries.
Diagnostic conditions
- Exhaust temperature between 350 °C (662 °F) and 890 °C (1,634 °F)
- Battery positive voltage between 11 V and 16 V
- Engine idling for 3,000 seconds after start
- Coolant temperature between 40 °C and 60 °C (104 °F and 140 °F)
- No secondary air
- No secondary air diagnosis
- No tank ventilation
- No tank ventilation diagnosis
- No other faults stored
Possible fault causes
- Short to ground in signal line
- Inter-core short circuit
- Oxygen sensor faulty (short circuit)
Affected contacts on the DFI control unit connector
Connector [B]: - Contact 54
- Contact 55
Affected contacts on the oxygen sensor connector behind catalytic converter, bank 1
Connector [A]: - Contact 3
- Contact 4