Check fuses and check for missing fuses
DTC P0135, P0141, P0155 Or P0161
DTCs received separately indicate a short to ground or open circuit in HO2S heater circuit. DTCs received in pairs, such as P0135 and P0155 or P0141 and P0161, indicate HO2S heater circuit is shorted to a power source of more than 2 volts.
DTC P0135 is for HO2S 11.
DTC P0155 for HO2S 12.
DTC P0141 for HO2S 21.
DTC P0161 for HO2S 22.
Possible causes are:
Signal shorted in wiring harness or HO2S.
Water in connectors.
Cut or pulled wires.
Open in GND or VPWR circuit.
Faulty HO2S heater.
Inspect HO2S connectors for loose, damaged or corroded terminals. Repair as necessary
Friday, October 30th, 2009 AT 10:19 PM