DTC P0133, P013A, P013B, P013E, P013F, P1133, P2270, P2271, or P2A00
| DTC P0133, P013A, P013B, P013E, P013F, P1133, P2270, P2271, or P2A00 |
| Diagnostic Instructions |
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Perform the
Diagnostic System Check - Vehicle
prior to using this diagnostic procedure.
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Review
Strategy Based Diagnosis
for an overview of the diagnostic approach.
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Diagnostic Procedure Instructions
provides an overview of each diagnostic category.
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| DTC Descriptors |
DTC P0133
HO2S Slow Response Sensor 1
DTC P013A
HO2S Slow Response Rich to Lean Sensor 2
DTC P013B
HO2S Slow Response Rich to Lean Sensor 2
DTC P013E
HO2S Delayed Response Rich to Lean Sensor 2
DTC P013F
HO2S Delayed Response Rich to Lean Sensor 2
DTC P2270
HO2S Signal Stuck Lean Sensor 2
DTC P2271
HO2S Signal Stuck Rich Sensor 2
DTC P2A00
HO2S Circuit Closed Loop (CL) Performance Sensor 1
| Diagnostic Fault Information |
| Circuit | Short to Ground | Open/High Resistance | Short to Voltage | Signal Performance |
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HO2S High Signal
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P0131, P0137
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P0132, P0134, P0138, P0140
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P0132, P0134, P0138, P0140
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P0133, P013A, P013B, P013E, P013F, P2A00
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HO2S Low Signal
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P0131, P0137
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P0132, P0134, P0138, P0140
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P0132, P0134, P0138, P0140
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P0133, P013A, P013B, P013E, P013F, P2A00
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HO2S Heater Voltage Supply
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P0030, P0036, P0132, P0135, P0138, P0141, *
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P0030, P0036, P0132, P0134, P0135, P0138, P0140, P0141
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P0690
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P0135, P0141
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HO2S Heater Control
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P0030, P0036, P0053, P0054, P0135, P0141
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P0030, P0036, P0132, P0134, P0135, P0138, P0140, P0141
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P0030, P0036, P0132, P0134, P0135, P0138, P0140, P0141
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P0135, P0141
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* Opens fuse
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| 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
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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.
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The engine coolant temperature (ECT) is greater than 69°C (157°F).
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The system voltage is between 10-32 V.
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The fuel level is greater than 10 percent.
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The engine run time is greater than 60 s.
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The engine speed is between 1,000-3,500 RPM.
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The scan tool device controls are not active.
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The HO2S heaters have been on for more than 40 s.
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The learned HO2S heater resistance is valid.
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The intake air temperature (IAT) is greater than -40°C (-40°F).
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The fuel composition is less than 87 percent ethanol.
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The BARO pressure is greater than 70 kPa (10 psi).
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Fuel control is not in power enrichment.
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Decel fuel cut off is not active.
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The mass airflow (MAF) is between 10-50 g/s.
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The engine is in Closed Loop status.
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DTC P0133 runs once per drive cycle when the above conditions are met for 3 s.
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P013A and P013E
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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.
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The system voltage is between 10-32 V.
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The fuel level is more than 10 percent.
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Engine run time is equal to or greater than 40 s.
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DTC P2270 has run and passed.
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P013E only-DTC P013E has run and passed.
THEN |
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Decel fuel cut off is active.
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The accelerator pedal position (APP) is stable.
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The torque converter clutch (TCC) is locked.
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DTCs P013A and P013E run once per trip.
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P013B and P013F
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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.
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The system voltage is between 10-32 V.
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The fuel level is greater than 10 percent.
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Engine run time is equal to or greater than 40 s.
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DTCs P013A, P013E, P013F, P2270, and P2271 have run and passed.
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DTCs P013B and P013F run once per trip.
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P2270
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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.
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The system voltage is between 10-32 V.
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The fuel level is greater than 10 percent.
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The engine speed is between 1175-2200 RPM to enable and 1100-2300 RPM to keep enabled.
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The MAF is 2-10 g/s.
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The vehicle speed is 65-119 km/h (41-74 mph) to enable and 56-132 km/h (35-82 mph) to keep enabled.
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The engine is in Closed Loop status.
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The Power Take-Off is not active.
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The HO2S heaters are on for more than 180 s.
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The predicted catalytic converter temperature is between 500-900°C (1,202-1,652°F).
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This DTC runs once per trip when all of the above conditions have been met for 3 s.
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P2271
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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.
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The system voltage is between 10-32 V.
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The fuel level is greater than 10 percent.
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The engine speed is 1175-2200 RPM.
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The MAF is 2-10 g/s.
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The vehicle speed is 65-119 km/h (41-74 mph).
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The engine is in Closed Loop status.
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The Power Take-Off is not active.
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The HO2S heaters have been on more than 180 s.
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The predicted catalytic converter temperature is between 500-900°C (1,202-1,652°F).
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DTCs P013A, P013E, and P2270 have run and passed.
THEN |
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Decel fuel cut off is active.
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The APP is stable.
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The TCC is locked.
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This DTC runs once per trip when the above conditions are met.
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P2A00
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DTCs P0068, P0106, P0107, P0108, P0116, P0117, P0118, P0120, P0121, P0122, P0123, P0128, P0131, P0201, P0202, P0203, P0204, P0220, P0222, P0223, P1516, P2101, P2119, P2135, P2176 are not set.
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The engine run time is greater than 100 s.
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The engine speed is 700-3000 RPM.
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The system voltage is between 10-32 V.
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The MAF is 3-45 g/s.
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The ECT is greater than 70°C (158°F).
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Decel fuel cut off is not active.
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Fuel enrichment is not active.
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DTC P2A00 runs continuously when the above conditions are met for 5 s.
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| Conditions for Setting the DTC |
P0133
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The ECM detects that the HO2S 1 average response time is more than a calculated value.
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DTC P0133 sets within 60 s when the above condition is met.
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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.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.P2A00
HO2S 1 voltage is greater than 1100 mV for more than 5 s.| Action Taken When the DTC Sets |
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DTCs P0133, P013E, P013F, P2270, P2271, P2A00 are Type B DTCs.
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DTCs P013A and P013B are Type A DTCs.
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| Conditions for Clearing the MIL/DTC |
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DTCs P0133, P013E, P013F, P2270, P2271, P2A00 are Type B DTCs.
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DTCs P013A and P013B are Type A DTCs.
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| Diagnostic Aids |
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Exhaust leaks may be small, pin hole size leaks and may occur at welds or other attachments to the exhaust system.
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A DTC may set with an exhaust system leak small enough that it may not be audible.
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| Reference Information |
Schematic Reference
Engine Controls Schematics
Connector End View Reference
Component Connector End Views
Electrical Information Reference
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Circuit Testing
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Connector Repairs
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Testing for Intermittent Conditions and Poor Connections
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Wiring Repairs
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Scan Tool Reference
Control Module References for scan tool information
| Circuit/System Verification |
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Ignition ON, observe the DTC information with a scan tool. Verify no B52 HO2S heater DTCs are set.
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If a B52 HO2S heater DTC is set, refer to
Diagnostic Trouble Code (DTC) List - Vehicle
.
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Verify none of the following conditions exist:
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Lean or rich fuel injectors-Refer to
Fuel Injector Solenoid Coil Test
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Water intrusion in the HO2S harness connector
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Low or high fuel system pressure-Refer to
Fuel System Diagnosis
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Fuel that is contaminated-Refer to
Alcohol/Contaminants-in-Fuel Diagnosis
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Fuel saturation of the evaporative emission (EVAP) canister
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Exhaust leaks-Refer to
Exhaust Leakage
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Engine vacuum leaks
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Engine coolant consumption-Refer to
Loss of Coolant
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If you find any of the above conditions, repair as necessary.
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If all conditions test normal, test or replace the appropriate HO2S.
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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.
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| Repair Instructions |
Perform the Diagnostic Repair Verification after completing the diagnostic procedure.
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Heated Oxygen Sensor Replacement - Sensor 1
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Heated Oxygen Sensor Replacement - Sensor 2
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Perform the scan tool Heated Oxygen Sensor Resistance Learn Reset after replacing a HO2S.
Control Module References for replacement, programming, and set up
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