P013E
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
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
* DTCs P0101, P0102, P0103, P0106, P0107, P0108, P0116, P0117, P0118, P0128, P0131, P0132, P0134, P0201, P0202, P0203, P0204, P0300, P0411, P0412, P0418, P0442, P0443, P0446, P0449, P0451, P0452, P0453, P0454, P0455, P0496 are not set.
* The engine coolant temperature (ECT) is hotter than 69°C (157°F).
* The system voltage is between 10-32 V.
* The fuel level is greater than 10 percent.
* The engine run time is greater than 60 s.
* The engine speed is between 1,000-3,500 RPM.
* The scan tool device controls are not active.
* The HO2S heaters have been on for more than 40 s.
* The learned HO2S heater resistance is valid.
* The intake air temperature (IAT) is greater than -40°C (-40°F).
* The fuel composition is less than 87 percent ethanol.
* The BARO pressure is greater than 70 kPa (10 psi).
* The fuel control is not in power enrichment.
* Decel fuel cut off is not active.
* The mass airflow (MAF) is between 10-50 g/s.
* The engine is in Closed Loop status.
* DTC P0133 runs once per drive cycle when the above conditions are met for 3 s.
P013A
* DTCs P0068, P0101, P0102, P0103, P0106, P0107, P0108, P0112, P0113, P0116, P0117, P0118, P0120, P0121, P0122, P0123, P0128, 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 percent.
* DTC P013E and P2270 have run and passed.
THEN
* Decel fuel cut off is active.
* The accelerator pedal position (APP) is stable.
* This DTC runs once per trip.
P013B and P013F
* DTCs P0068, P0101, P0102, P0103, P0106, P0107, P0108, P0112, P0113, P0116, P0117, P0118, P0120, P0121, P0122, P0123, P0128, P013A, 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 percent.
* DTCs P013A, P013E, P013F, P2270, and P2271 have run and passed.
* DTCs P013B and P013F run once per trip.
P013E
* DTCs P0068, P0101, P0102, P0103, P0106, P0107, P0108, P0112, P0113, P0116, P0117, P0118, P0120, P0121, P0122, P0123, P0128, 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 percent.
* DTC P2270 has run and passed.
THEN
* Decel fuel cut off is active.
* The accelerator pedal position (APP) is stable.
* This DTC runs once per trip.
P015A and 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 greater than 70°C (158°F).
* The intake air temperature (IAT) is warmer than -40°C (-40°F)
* The HO2S heater is on for greater than 180 s.
* The fuel level is greater than 10 percent.
* The engine run time is greater than 120 s.
* The engine speed is between 1,100-2,300 RPM.
* The vehicle speed is between 51-120 km/h (31.7-74.6 mph).
* The engine airflow is between 3-12 g/s.
* Device controls are not active.
* The evaporative emission (EVAP) diagnostics are not in control of purge.
* The predicted catalytic converter temperature is between 600-900°C (1,112-1,652°F).
* The fuel system is in Closed Loop.
* 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 percent.
* The engine speed is between 1175-2200 RPM to enable and 1100-2300 RPM to keep enabled.
* The engine air flow is between 2-10 g/s.
* The vehicle speed is 65-119 km/h (41-74 mph) to enable and 56-132 km/h (35-82 mph) to keep enabled.
* The engine is in Closed Loop status.
* The Power Take-Off is not active.
* The HO2S heaters are on for more than 180 s.
* This DTC runs once per trip when all of the above conditions have been met for 3 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 percent.
* The engine speed is 1175-2200 RPM.
* The engine air flow is between 2-10 g/s.
* The vehicle speed is 65-119 km/h (41-74 mph).
* The engine is in Closed Loop status.
* Power take-off is not active.
* The HO2S heaters have been on more than 180 s.
* DTCs P013A, P013E, and P2270 have run and passed.
THEN
* Decel fuel cut off is active.
* The APP is stable.
* This DTC runs once per trip when the above conditions are met.
Conditions for Setting the DTC
P0133
* The ECM detects that the HO2S 1 average response time is greater than a calculated value.
* DTC P0133 sets within 60 s when the above condition is met.
P013A
The ECM detects that the HO2S 2 average response time during the rich to lean transition is greater than a calculated value.
P013B
The ECM detects that the HO2S 2 average response time during the lean to rich transition is greater than a calculated value.
P013E
The ECM detects that the HO2S 2 sensor cannot achieve voltage below 450 mV within a calibrated time.
P013F
The ECM detects that the HO2S sensor cannot achieve voltage above 350 mV within a calibrated time.
P015A
* The ECM detects that the length of time to change from rich to lean is greater than a calibrated value.
* DTC P015A sets within 60 s when the above condition is met.
P015B
* The ECM detects that the length of time to change from lean to rich is greater than a calibrated value.
* DTC P015B sets within 60 s when the above condition is met.
P2270
The ECM detects that the HO2S 2 sensor cannot achieve a voltage greater than 875 mV within a calibrated time.
P2271
The ECM detects that the HO2S 2 sensor cannot achieve a voltage less than 100 mV within a calibrated time.
Action Taken When the DTC Sets
* DTCs P0133, P013E, P013F, P2270, P2271 are Type B DTCs.
* DTCs P013A, P013B, P015A, and P015B are Type A DTCs.
Conditions for Clearing the MIL/DTC
* DTCs P0133, P013E, P013F, P2270, P2271 are Type B DTCs.
* DTCs P013A, P013B, P015A, and P015B are Type A DTCs.
Diagnostic Aids
* Exhaust leaks may be small, pin hole size leaks and may occur at welds or other attachments to the exhaust system.
* A DTC may set with an exhaust system leak small enough that it may not be audible.
Reference Information
Schematic Reference
Engine Controls Schematics [1][2]Electrical Diagrams
Connector End View Reference
Component Connector End Views Outside Rearview Mirror - Driver
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
Scan Tool Reference
Control Module References Control Module References for scan tool information
Circuit/System Verification
1. Ignition ON, observe the DTC information with a scan tool. Verify no B52 HO2S heater DTCs are set.
• If a B52 HO2S heater DTC is set, refer to Diagnostic Trouble Code (DTC) List - Vehicle Diagnostic Trouble Code (DTC) List - Vehicle.
2. Verify none of the following conditions 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-Refer to Exhaust Leakage Exhaust Leakage.
* Engine vacuum leaks
* Engine coolant consumption-Refer to Loss of Coolant Loss of Coolant.
• If you find any of the above conditions, repair as necessary.
3. If all conditions test normal, test or replace the appropriate HO2S.
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.
Repair Instructions
Perform the Diagnostic Repair Verification Verification Tests after completing the repair.
* Heated Oxygen Sensor Replacement - Sensor 1 Heated Oxygen Sensor Replacement - Sensor 1
* Heated Oxygen Sensor Replacement - Sensor 2 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 replacement, programming, and setup