P005x - HO2S Heater Resistance (Bank 1, Sensor 1), (Bank 1, Sensor 2), (Bank 1, Sensor 3), and (Bank 2, Sensor 1)
Description:
Heater current requirements too low or high in the heated oxygen sensor (HO2S) heater control circuit (HO2S11, HO2S12, HO2S13, HO2S21).
Possible Causes:
- VPWR circuit open
- HO2S heater circuit open
- HO2S heater circuit short in the harness
- Damaged HO2S heater
Diagnostic Aids:
Inspect the connectors for signs of damage, water ingress, or corrosion.
Application
Key On Engine Off
Key On Engine Running
Continuous Memory
All
GO to Pinpoint Test DW .
P0060 - HO2S Heater Resistance (Bank 2, Sensor 2)
Description:
Heater current requirements too low or high in the heated oxygen sensor (HO2S) heater control circuit (HO2S22).
Possible Causes:
See the possible causes for DTC P005x.
Diagnostic Aids:
See the diagnostic aids for DTC P005x.
Application
Key On Engine Off
Key On Engine Running
Continuous Memory
All
GO to Pinpoint Test DW .
P0455 - Evaporative Emission System Leak Detected (Gross Leak/No Flow)
Description:
The powertrain control module (PCM) monitors the complete evaporative emission (EVAP) control system for no purge flow, the presence of a large fuel vapor leak, or multiple small fuel vapor leaks. System failure occurs when no purge flow, which is attributed to fuel vapor blockages or restrictions, a large fuel vapor leak, or multiple fuel vapor leaks are detected by the EVAP running loss monitor test with the engine running, but not at idle.
Possible Causes:
- After market EVAP hardware that does not conform to the required specifications
- Disconnected or cracked fuel EVAP canister tube, EVAP canister purge outlet tube, or EVAP return tube
- EVAP canister purge valve stuck closed
- Damaged EVAP canister
- Damaged or missing fuel filler cap
- Insufficient fuel filler cap installation
- Loose fuel vapor hose/tube connections to the EVAP system components
- Blockages or restrictions in the fuel vapor hoses/tubes
- Fuel vapor control valve tube assembly or fuel vapor vent valve assembly blocked
- Canister vent (CV) solenoid stuck open
- Mechanically inoperative fuel tank pressure (FTP) sensor
Diagnostic Aids:
Check for audible vacuum noise or significant fuel odor in the engine compartment or near the EVAP canister and fuel tank.
Application
Key On Engine Off
Key On Engine Running
Continuous Memory
All
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-
GO to Pinpoint Test HX .
P2270 - O2 Sensor Signal Stuck Lean - Bank 1, Sensor 2
Description:
The downstream heated oxygen sensor (HO2S) is forced rich and lean and monitored by the powertrain control module (PCM). The test fails if the PCM does not detect the output of the HO2S in a calibrated amount of time.
Possible Causes:
- Pinched, shorted, and corroded wiring and pins
- Crossed HO2S wires
- Exhaust leaks
- Contaminated or damaged HO2S
Diagnostic Aids:
Application
Key On Engine Off
Key On Engine Running
Continuous Memory
All
-
GO to Pinpoint Test H .
GO to Pinpoint Test H .
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