P1133
DTC P0133, P0153, P1133, or P1153
Diagnostic Instructions
* Perform the Diagnostic System Check - Vehicle (Diagnostic System Check - Vehicle) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (Strategy Based Diagnosis) for an overview of the diagnostic approach.
* Diagnostic Procedure Instructions (Diagnostic Procedure Instructions)provides an overview of each diagnostic category.
DTC Descriptors
DTC P0133
- HO2S Slow Response Bank 1 Sensor 1
DTC P0153
- HO2S Slow Response Bank 2 Sensor 1
DTC P1133
- HO2S Insufficient Switching Bank 1 Sensor 1
DTC P1153
- HO2S Insufficient Switching Bank 2 Sensor 1
Diagnostic Fault Information
Typical Scan Tool Data
Circuit/System Description
The heated oxygen sensors (HO2S) are used for fuel control and catalyst monitoring. Each HO2S compares the oxygen content of the surrounding air with the oxygen content of the exhaust stream. When the engine is started, the control module operates in an Open Loop mode, ignoring the HO2S signal voltage while calculating the air-to-fuel ratio. While the engine runs, the HO2S heats up and begins to generate a voltage within a range of 0-1,275 mV. Once sufficient HO2S voltage fluctuation is observed by the control module, Closed Loop is entered. The control module uses the HO2S voltage to determine the air-to-fuel ratio. An HO2S voltage that increases toward 1,000 mV indicates a rich fuel mixture. An HO2S voltage that decreases toward 0 mV indicates a lean fuel mixture.
The heating elements inside each HO2S heat the sensor to bring the sensor up to operating conditions faster. This allows the system to enter Closed Loop earlier and the control module to calculate the air-to-fuel ratio sooner.
Conditions for Running the DTC
P0133, P0153, P1133, or P1153
* DTCs P0068, P0101, P0102, P0103, P0106, P0107, P0108, P0112, P0113, P0116, P0117, P0118, P0120, P0121, P0122, P0123, P0128, P0201, P0202, P0203, P0204, P0205, P0206, P0207, P0208, P0220, P0222, P0223, P0442, P0443, P0446, P0449, P0455, P0496, P1516, P2101, P2119, P2135, or P2176 are not set.
* The engine coolant temperature (ECT) is greater than 70°C (158°F).
* The intake air temperature (IAT) is warmer than -40°C (-40°F)
* The ignition 1 voltage is between 10-18 volts.
* The fuel level is greater than 10 percent.
* The engine run time is greater than 202 seconds.
* The engine speed is between 1,100-2,500 RPM.
* The barometric (BARO) pressure is greater than 70 kPa.
* The mass airflow (MAF) is between 20-40 g/s.
* The fuel system is in Closed Loop.
* The throttle position (TP) is greater than 3 percent.
* The DTCs run once per drive cycle when the above conditions are met.
Conditions for Setting the DTC
P0133 or P0153
* The ECM detects that the HO2S 1 rich-to-lean or lean-to-rich average response time is greater than a calibrated value.
* The DTCs set within 60 seconds when the above condition is met.
P1133 or P1153
* The ECM detects that the HO2S 1 rich-to-lean counts, or the lean-to-rich counts are less than a calibrated value.
* The DTCs set within 60 seconds when the above condition is met.
Action Taken When the DTC Sets
DTCs P0133, P0153, P1133, and P1153 are Type B DTCs.
Conditions for Clearing the DTC
DTCs P0133, P0153, P1133, and P1153 are Type B DTCs.
Reference Information
Schematic Reference
Engine Controls Schematics ([1][2]Electrical Diagrams)
Connector End View Reference
Component Connector End Views (Connector Views)
Electrical Information Reference
* Circuit Testing (Circuit Testing)
* Connector Repairs (Connector Repairs)
* Testing for Intermittent Conditions and Poor Connections (Testing For Intermittent Conditions and Poor Connections)
* Wiring Repairs (Wiring Repairs)
* Heated Oxygen Sensor Wiring Repairs (Heated Oxygen Sensor Wiring Repairs)
DTC Type Reference
Powertrain Diagnostic Trouble Code (DTC) Type Definitions (Powertrain Diagnostic Trouble Code (DTC) Type Definitions)
Scan Tool Reference
Control Module References (Programming and Relearning)for scan tool information
Circuit/System Verification
* Observe the DTC information with a scan tool. Verify there are no B52 HO2S heater or fuel trim DTCs set.
• If any DTCs are set, refer to Diagnostic Trouble Code (DTC) List - Vehicle (Diagnostic Trouble Code (DTC) List - Vehicle).
* Engine idling at operating temperature, observe the appropriate B52 HO2S parameter with a scan tool. Verify the following:
- The HO2S 1 value should vary from below 200 mV to above 800 mV and respond to fueling changes.
- The HO2S 2 value should change greater than 200 mV when the throttle is quickly cycled 3 times from closed to wide open and back to closed after running the engine at 1,500 RPM for 30 seconds.
* Operate the vehicle within the Conditions for Running the DTC to verify the DTC does not reset. You may also operate the vehicle within the conditions that you observed from the Freeze Frame/Failure Records data.
Circuit/System Testing
1. Verify none of the following conditions exist:
* Lean or rich fuel injectors-Refer to Fuel Injector Diagnosis (W/J39021 or W/Tech 2) (Fuel Injector Diagnosis (W/J39021 or W/Tech 2))Fuel Injector Diagnosis (W/CH47976) (Fuel Injector Diagnosis (W/CH47976))
* Water intrusion in the HO2S harness connector
* Low or high fuel system pressure-Refer to Fuel System Diagnosis (Fuel System Diagnosis)
* Fuel that is contaminated-Refer to Alcohol/Contaminants-in-Fuel Diagnosis (Alcohol/Contaminants-In-Fuel Diagnosis)
* Fuel saturation of the evaporative emission (EVAP) canister
* Exhaust leaks near the HO2S
* Engine vacuum leaks
* Engine oil consumption-Refer to Oil Consumption Diagnosis (Oil Consumption Diagnosis)
* Engine coolant consumption-Refer to Loss of Coolant (Loss of Coolant)
• If you find any of the above conditions, repair as necessary.
2. If all conditions test normal, test or replace the appropriate HO2S.
Repair Instructions
Caution: Refer to Heated Oxygen Sensor Resistance Learn Reset Caution (Heated Oxygen Sensor Resistance Learn Reset Caution).
Perform the Diagnostic Repair Verification (Verification Tests) after completing the diagnostic procedure.
* Heated Oxygen Sensor Replacement - Bank 1 Sensor 1 (Service and Repair)
* Heated Oxygen Sensor Replacement - Bank 1 Sensor 2 (Service and Repair)
* Heated Oxygen Sensor Replacement - Bank 2 Sensor 1 (Service and Repair)
* Control Module References (Programming and Relearning)for ECM replacement, setup, and programming