Acura RL. Manual - part 12
Enable Conditions
ENABLE CONDITIONS
Malfunction Threshold
One of these conditions must be met for at least 2 seconds.
No return signal "HIGH" is detected when the PCM output duty is less than 20%.
Return signal does not change when the PCM output duty is more than 20% and less than 80%.
No return signal "LOW" is detected when the PCM output duty is more than 80%.
Driving Pattern
Start the engine. Hold the engine speed at 3,000 rpm without load (in Park or neutral) until the radiator fan
comes on, then let it idle.
Diagnosis Details
Conditions for illuminating the MIL
When a malfunction is detected, the MIL comes on and the DTC and the freeze frame data are stored in the
PCM memory.
Conditions for clearing the MIL
The MIL will be cleared if the malfunction does not recur during three consecutive trips in which the
diagnostic runs.
The MIL, the DTC, and the freeze frame data can be cleared by using the scan tool Clear command or by
disconnecting the battery.
DTC P0157 (162): ADVANCED DIAGNOSTICS
DTC P0157: FRONT SECONDARY HEATED OXYGEN SENSOR (SECONDARY HO2S (BANK 2,
SENSOR 2)) CIRCUIT LOW VOLTAGE
Condition
State of the engine
Running
Other
During front A/F sensor heater operation
2007 Acura RL
2007 ENGINE PERFORMANCE Advanced Diagnostics - RL
me
Friday, June 05, 2009 2:32:03 PM
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