P0133
DTC P0133, P013A, P013B, P013E, P013F, P015A, P015B, P2270, or P2271
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 Sensor 1
DTC P013A
- HO2S Slow Response Rich to Lean Sensor 2
DTC P013B
- HO2S Slow Response Lean to Rich Sensor 2
DTC P013E
- HO2S Delayed Response Rich to Lean Sensor 2
DTC P013F
- HO2S Delayed Response Lean to Rich Sensor 2
DTC P015A
- HO2S Delayed Response Rich to Lean Sensor 1
DTC P015B
- HO2S Delayed Response Lean to Rich Sensor 1
DTC P2270
- HO2S Signal Stuck Lean Sensor 2
DTC P2271
- HO2S Signal Stuck Rich Sensor 2
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 0-1,000 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
* DTCs P0068, P0101, P0102, P0103, P0106, P0107, P0108, P0111, P0112, P0113, P0116, P0117, P0118, P0120, P0121, P0122, P0123, P0128, P0131, P0132, P0134, P0201, P0202, P0203, P0204, P0205, P0206, P0207, P0208, P0220, P0222, P0223, P0261, P0262, P0264, P0265, P0267, P0268, P0270, P0271, P0273, P0274, P0276, P0277, P0279, P0280, P0282, P0283, P0300-P0308, P0442, P0443, P0446, P0449, P0452, P0453, P0455, P0496, P1104, P1248, P1249, P124A, P124B, P124C, P124D, P124E, P124F, P1516, P16F3, P2100-P2103, P2119, P2135, P2147, P2148, P2150, P2151, P2153, P2154, P2156, P2157, P216B, P216C, P216E, P216F, P217B, P217C, P217E, P217F, P2176, P2227-P2230 are not set.
* The Ignition voltage is between 10-32 V.
* The engine coolant temperature (ECT) is warmer than 70°C (158°F).
* The intake air temperature (IAT) is warmer than -40°C (-40°F)
* The fuel level is greater than 10%.
* The engine run time is greater than 1205 s.
* The engine speed is between 1,000-3,500 RPM.
* The barometric (BARO) pressure is greater than 70 kPa.
* The mass airflow (MAF) is between 10-40 g/s.
* The fuel system is in Closed Loop.
* Ethanol content is less than 87%.
* Fuel control is not in power enrichment.
* Decel fuel cut-off is not active.
* The DTCs run once per drive cycle when the above conditions are met for 3 s.
P013A or P013E
* Before the ECM can report DTC P013A, or P013C failed, DTCs P013E, P014A, P2270, and P2272 must run and pass.
* Before the ECM can report DTC P013E, or P014A failed, DTCs P2270 and P2272 must run and pass.
* DTCs P0030, P0036, P0053, P0054, P0101, P0102, P0103, P0106, P0107, P0108, P0120, P0121, P0122, P0123, P0131, P0132, P0133, P0134, P0135, P0137, P0138, P013A, P013B, P013E, P013F, P0140, P0141, P0171, P0172, P0201-P0208, P0220, P0222, P0223, P0300-P0308, P0442, P0443, P0446, P0449, P0455, P0496, P1133, P1174, P1516, P2101, P2119, P2135, P2176, P2270, P2271, P2A00 are not set.
* The Ignition voltage is between 10-32 V.
* The learned heater resistance is valid.
* The fuel level is greater than 10%.
* After the above conditions are met decel fuel cut-off continues without driver initiated pedal input.
* The DTCs run once per ignition cycle, during decel fuel cut-off (DFCO), when the above conditions are met.
P013B or P013F
* Before the ECM can report DTC P013B, or P013D failed, DTCs P013A, P013C, P013E, P013F, P014A, P014B, P2270, P2271, P2272, and P2273 must run and pass.
* Before the ECM can report DTC P013F, or P014B failed, DTCs P013A, P013C, P013E, P014A, P2270, P2271, P2272, and P2273 must run and pass.
* DTCs P0030, P0036, P0053, P0054, P0101, P0102, P0103, P0106, P0107, P0108, P0120, P0121, P0122, P0123, P0131, P0132, P0133, P0134, P0135, P0137, P0138, P013A, P013B, P013E, P013F, P0140, P0141, P0171, P0172, P0201-P0208, P0220, P0222, P0223, P0300-P0308, P0442, P0443, P0446, P0449, P0455, P0496, P1133, P1174, P1516, P2101, P2119, P2135, P2176, P2270, P2271, P2A00 are not set.
* The Ignition voltage is between 10-32 V.
* The learned heater resistance is valid.
* The fuel level is greater than 10%.
* After the above conditions are met, fuel enrich mode is continued.
* The DTCs run once per ignition cycle when the above conditions are met.
P015A or P015B
* 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, P2176 are not set.
* The Ignition voltage is between 10-32 V.
* The engine coolant temperature (ECT) is warmer than 70°C (158°F).
* The intake air temperature (IAT) is warmer than -40°C (-40°F)
* The fuel level is greater than 10%.
* The engine run time is greater than 120 s.
* The engine speed is between 1,250-2,300 RPM.
* The vehicle speed is between 56-119 km/h (35-74 mph).
* The mass airflow (MAF) is between 3-12 g/s.
* The fuel system is in Closed Loop.
* Device controls are not active.
* The evaporative emission (EVAP) diagnostics are not in control of purge.
* The heated oxygen sensor 1 heater is on for greater than 40 s.
* The heated oxygen sensor 2 heater is on for greater than 175 s
* After the above conditions are met for 1 s the fuel mixture is forced rich.
* At the end of the forced rich fuel state, the heated oxygen sensor 1 is greater than 0.690 V and decel fuel cut-off is active.
* The DTCs run once per drive cycle when the above conditions are met.
P2270
* DTCs P0068, P0101, P0102, P0103, P0106, P0107, P0108, P0112, P0113, P0116, P0117, P0118, P0120, P0121, P0122, P0123, P0128, P013A, P013B, P013E, P013F, P0171, P0172, P0201, P0202, P0203, P0204, P0220, P0222, P0223, P0300, P0411, P0412, P0418, P1174, P1516, P2101, P2119, P2135, P2176, P2270, P2271 are not set.
* The system voltage is between 10-32 V.
* The fuel level is greater than 10%.
* The pedal position is less than 4%.
* The engine speed is between 1,250-2,300 RPM.
* The engine airflow is between 3-12 g/s.
* The vehicle speed is between 55-120 km/h (35-74 mph).
* The fuel state is in Closed Loop.
* The evaporative emission (EVAP) diagnostics are not in control of purge.
* The HO2S heaters are ON for more than 180 s.
* The predicted catalytic converter temperature is between 600-850°C (1,112-1,562°F).
* This DTC runs once per trip when all of the above conditions have been met for 1 s.
P2271
* DTCs P0068, P0101, P0102, P0103, P0106, P0107, P0108, P0112, P0113, P0116, P0117, P0118, P0120, P0121, P0122, P0123, P0128, P013A, P013B, P013E, P013F, P0171, P0172, P0201, P0202, P0203, P0204, P0220, P0222, P0223, P0300, P0411, P0412, P0418, P1174, P1516, P2101, P2119, P2135, P2176, P2270 are not set.
* The system voltage is between 10-32 V.
* The fuel level is greater than 10%.
* The engine speed is between 1,250-2,300 RPM.
* The engine airflow is between 3-12 g/s.
* The vehicle speed is between 55-120 km/h (34.2-74.6 mph).
* The fueling state is in Closed Loop.
* The evaporative emission (EVAP) diagnostics are not in control of purge.
* Power take-off is not active.
* The heated oxygen sensor heaters have been on more than 180 s.
* The predicted catalyst temperature is between 600-850°C (1,112-1,562°F).
* DTCs P013A, P013E, and P2270 have run and passed.
THEN
* Decel fuel cut-off is active.
* The accelerator pedal position is stable.
* This DTC runs once per trip when the above conditions are met for 3 s.
Conditions for Setting the DTC
P0133, P015A or P015B
* The engine control module detects that the heated oxygen sensor rich-to-lean or lean-to-rich average response time is greater than a calibrated value.
* The DTCs set within 60 s when the above condition is met.
P013A
The engine control module detects that the accumulated mass air flow monitored during rich-to-lean transitions between 450-150 mV is greater than 75 grams.
P013B
The engine control module detects that the accumulated mass air flow monitored during lean-to-rich transitions between 300-600 mV is greater than 75 grams.
P013E
The engine control module detects that the heated oxygen sensor voltage has not decreased below 450 mV within a calibrated value of accumulated air flow.
P013F
The engine control module detects that the heated oxygen sensor voltage has not increased above 300 mV within a calibrated value of accumulated air flow.
P2270
The engine control module does not detect a heated oxygen sensor voltage greater than 825 mV before accumulated mass air flow exceeds a calibrated value.
P2271
The engine control module does not detect an heated oxygen sensor voltage less than 100 mV before accumulated mass air flow exceeds a calibrated value.
Action Taken When the DTC Sets
* DTCs P0133, P013E, P013F, P2270, and P2271 are Type B DTCs.
* DTCs P013A, P013B, P015A, and P015B are Type A DTCs.
Conditions for Clearing the DTC
* DTCs P0133, P013E, P013F, P2270, and P2271 are Type B DTCs.
* DTCs P013A, P013B, P015A, and P015B are Type A DTCs.
Reference Information
Schematic Reference
Engine Controls Schematics [1][2]Electrical Diagrams
Connector End View Reference
Component Connector End Views Sunshade - Left
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
DTC Type Reference
Powertrain Diagnostic Trouble Code (DTC) Type Definitions Powertrain Diagnostic Trouble Code (DTC) Type Definitions
Scan Tool Reference
Control Module References Control Module References for scan tool information
Circuit/System Verification
1. Ignition ON.
2. Verify no HO2S heater DTCs are set.
• If a DTC is set
Refer to Diagnostic Trouble Code (DTC) List - Vehicle Diagnostic Trouble Code (DTC) List - Vehicle.
• If a DTC is not set
3. Verify none of the conditions listed below exist:
* Lean or rich fuel injectors-Refer to Fuel Injector Solenoid Coil Test Fuel Injector Solenoid Coil Test.
* 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 Testing and Inspection.
* Fuel saturation of the evaporative emission (EVAP) canister
* Exhaust leaks
* 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 any of the above conditions exist
Repair as necessary.
• If any of the conditions exist
4. 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.
5. Verify the DTC does not reset.
• If the DTC sets
Test or replace the appropriate B52 HO2S.
• If the DTC does not set
6. All OK.
Repair Instructions
Perform the Diagnostic Repair Verification Verification Tests after completing the repair.
* Heated Oxygen Sensor Replacement - Sensor 1 (LCV) Heated Oxygen Sensor Replacement - Sensor 1Heated Oxygen Sensor Replacement - Sensor 1 (LTG) Heated Oxygen Sensor Replacement - Sensor 1
* Heated Oxygen Sensor Replacement - Sensor 2 (LCV) Heated Oxygen Sensor Replacement - Sensor 2Heated Oxygen Sensor Replacement - Sensor 2 (LTG) Heated Oxygen Sensor Replacement - Sensor 2
* Perform the scan tool Heated Oxygen Sensor Resistance Learn Reset after replacing an HO2S.
* Control Module References Control Module References for ECM replacement, programming and setup