02 Sensor 2/1 Short Delay Time

(P0153) 02 SENSOR 2/1 SHORT DELAY TIME





When Monitored and Set Condition
^ When Monitored: Start and drive vehicle greater than 32 km/h (20 MPH) and less than 89 km/h (55 MPH). Throttle open for a minimum 120 seconds. Coolant Temp greater than 70°C (158°F) Catalytic Converter Temperature greater than 600°C (1112°F).
^ Set Condition: The 02 sensor voltage switches only 11 times or less from lean to rich within 20 seconds during monitoring. Two Trip Fault.

POSSIBLE CAUSES
- EXHAUST LEAK
- 02 SENSOR SIGNAL CIRCUIT OPEN
- 02 SENSOR SIGNAL CIRCUIT SHORT TO VOLTAGE
- 02 SENSOR SIGNAL CIRCUIT SHORT TO GROUND
- 02 SENSOR GROUND CIRCUIT OPEN
- 02 SENSOR GROUND CIRCUIT SHORT TO VOLTAGE
- 02 SENSOR GROUND CIRCUIT SHORT TO GROUND
- 02 SENSOR



Diagnostic Test
1. CHECK FOR CURRENT DTC





Turn the ignition on. With the DRBIII, read PCM DTCs.
Is this DTC present?
Yes >> For complete diagnosis of this DTC, refer to (P0133) 02 SENSOR 1/1 SHORT DELAY TIME. 02 Sensor 1/1 Short Delay Time
No >> Go To 2

2. INTERMITTENT WIRING AND CONNECTORS
The conditions necessary to set this DTC are not present at this time.

Note: Check connectors - Clean/repair as necessary. Poor pin to terminal connections can set DTCs. Using the wiring diagram/schematic as a guide, inspect the wiring and connectors specific to this DTC. Wiggle the wires while checking for shorts and open circuits.

Note: Check for any Technical Service Bulletins that may apply.

Were there any problems found?
Yes >> Repair as necessary. Perform POWERTRAIN VERIFICATION TEST - VER 2 Powertrain Verification Test - Ver 2.
No >> The condition that caused this DTC to set is currently not present. Inspect the related wiring harness for a possible intermittent condition.