Workshop Manual

6E–212
6VE1 3.5L ENGINE DRIVEABILITY AND EMISSIONS
DTC P0157 – HO2S Circuit Low Voltage Bank 2 Sensor 2 (Cont'd)
Step NoYesValue(s)Action
6 1. Ignition “OFF”.
2. Leave the PCM and HO2S 2 disconnected.
3. Check for continuity between the high and low
signal circuits.
Was there continuity between the high and low circuits?
— Go to Step 7 Go to Step 8
7 Repair the short between the high and low circuits.
Is the action complete?
— Verify repair —
8 1. Ignition “OFF”.
2. Reconnect the PCM, leave HO2S 2 disconnected.
3. Ignition “ON”.
Does the Tech 2 indicate Bank 2 HO2S 2 voltage near
the specified value?
425-475 mV
Refer to
Diagnostic
Aids
Go to Step 9
9 Replace the PCM.
IMPORTANT: The replacement PCM must be
programmed. Refer to
On-Vehicle Service in
Powertrain Control Module and Sensors for
procedures.
And also refer to the latest Service Bulletin.
Check to see if the Latest software is released or not.
And then Down Load the LATEST PROGRAMMED
SOFTWARE to the replacement PCM.
Is the action complete?
— Verify repair —