Dodge ZB 2005 Service Manual page 1177

DRIVEABILITY - GAS
Symptom List:
P0131-O2 SENSOR 1/1 CIRCUIT VOLTAGE TOO LOW
P0137-O2 SENSOR 1/2 CIRCUIT VOLTAGE TOO LOW
P0151-O2 SENSOR 2/1 CIRCUIT VOLTAGE TOO LOW
P0157-O2 SENSOR 2/2 CIRCUIT VOLTAGE TOO LOW
Test Note: All symptoms listed above are diagnosed using the same tests.
The title for the tests will be P0131-O2 SENSOR 1/1 CIRCUIT
VOLTAGE TOO LOW.
When Monitored and Set Condition:
P0131-O2 SENSOR 1/1 CIRCUIT VOLTAGE TOO LOW
When Monitored: At a cold start, engine coolant below 98°F, Ambient/Battery Sensor
reading within 27°F, and Engine Coolant Temperature above 170°F on the previous key off.
Set Condition: The Oxygen Sensor signal voltage is below 0.156 of a volt for 28 seconds
after starting engine.
P0137-O2 SENSOR 1/2 CIRCUIT VOLTAGE TOO LOW
When Monitored: At a cold start, engine coolant below 98°F, Ambient/Battery Sensor
reading within 27°F, and Engine Coolant Temperature above 170°F on the previous key off.
Set Condition: The Oxygen Sensor signal voltage is below 0.156 of a volt for 28 seconds
after starting engine.
P0151-O2 SENSOR 2/1 CIRCUIT VOLTAGE TOO LOW
When Monitored: At a cold start, engine coolant below 98°F, Ambient/Battery Sensor
reading within 27°F, and Engine Coolant Temperature above 170°F on the previous key off.
Set Condition: The Oxygen Sensor signal voltage is below 0.156 of a volt for 28 seconds
after starting engine.
P0157-O2 SENSOR 2/2 CIRCUIT VOLTAGE TOO LOW
When Monitored: At a cold start, engine coolant below 98°F, Ambient/Battery Sensor
reading within 27°F, and Engine Coolant Temperature above 170°F on the previous key off.
Set Condition: The Oxygen Sensor signal voltage is below 0.156 of a volt for 28 seconds
after starting engine.
O2 SENSOR BELOW 0.16 OF A VOLT
O2 SENSOR OPERATION
O2 SENSOR SIGNAL CIRCUIT SHORTED TO GROUND
O2 SENSOR SIGNAL CIRCUIT SHORTED TO (K900) SENSOR GROUND CIRCUIT
POSSIBLE CAUSES
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