DTC TEST NO. 85 (P0157): RIGHT BANK DOWNSTREAM O2S SHORTED TO GROUND
NOTE: Monitored within 3 seconds after engine starts with engine coolant temperature 120°F (49°C) or less. Set condition is when O2S output voltage is .16 volts or less. Possible causes are: right bank downstream O2S failed, defective wiring harness or connectors or
failed PCM.
1. Start engine and warm to operating temperature. Suddenly race engine after reaching operating
temperature. Using scan tool, read right bank downstream O2S voltage. Voltage should be 600
millivolts or more. If voltage is not within specification, go to next step. If voltage is within specification, failure is intermittent.
2. Check wiring harness between PCM connector and right bank downstream O2S connector. PCM is located at driver's side front corner of engine compartment, in front of Transmission Control Module (TCM), near fuse/relay panel. Repair as necessary. If failure was repaired, test is complete. If failure was not repaired, replace PCM. Test is complete.
P0700 Transmission Control System Malfunction
Replace transmission control module
P1782 2-4 Pressure Switch Sense Circuit
Replace transmission solenoid pack
It will be about 5 hours of labor to do diagnostics and repair, plus the cost of parts. You have to call around your local shops to find out their rates, and call your local dealership for the cost of the TCM and the solenoid pack. Be prepared with the complete VIN. They will require that for the right part.
Jan 13, 2009 at 6:06 PM
