Chevrolet Trax: DTC P0133, P013A, P013B, P013E, P013F, P015A, P015B, P2270, OR P2271 (LUV)

Diagnostic Instructions

• Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure.
• Review Strategy Based Diagnosis for an overview of the diagnostic approach.
• Diagnostic Procedure Instructions provide 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

HO2S 1 or 2

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

DTC P0133

• DTCs P0068, P0096, P0097, P0098, P00B3, P00B4, P00B6, P00C7, P0101, P0102, P0103, P0106, P0107, P0108, P0111, P0112, P0113, P0114, P0116, P0117, P0118, P0119, P0121, P0122, P0123, P0128, P0131, P0132, P0134, P0201, P0202, P0203, P0204, P0222, P0223, P0300, P0442, P0443, P0446, P0449, P0451, P0452, P0453, P0454, P0455, P0496, P1101, P1516, P2101, P2119, P2135, P2176 and P2450 are not set.
• The ignition voltage is between 10-32 V.
• The engine speed parameter is between 1 300-3 500 RPM.
• The engine coolant temperature (ECT) is hotter than 65ºC (149ºF).
• The intake air temperature (IAT) is hotter than -40ºC (-40ºF).
• The engine has been operating for greater than 100 s.
• The mass air flow (MAF) is between 10-35 g/s.
• The fuel system is in Closed Loop.
• The vehicle is not decelerating.
• The DTCs run continuously when the above conditions are met for greater than 1 s.

P013A

• DTCs P0068, P0096, P0097, P0098, P00B6, P0101, P0102, P0103, P0106, P0107, P0108, P0111, P0112, P0113, P0114, P0116, P0117, P0118, P0119, P0121, P0122, P0123, P0171, P0172, P0201, P0202, P0203, P0204, P0222, P0223, P0300, P1101, P1516, P2096, P2097, P2101, P2119, P2135, P2176 are not set.
• The ignition voltage is between 10-32 V.
• The fuel level is greater than 10%.
• DTC P013B, P013E, P013F, P2270 and P2271 have run.
• DTC P013E and P2270 have passed.
• DTC P013A runs once per trip.

P013B

• DTCs P0068, P0096, P0097, P0098, P00B6, P0101, P0102, P0103, P0106, P0107, P0108, P0111, P0112, P0113, P0114, P0116, P0117, P0118, P0119, P0121, P0122, P0123, P0171, P0172, P0201, P0202, P0203, P0204, P0222, P0223, P0300, P1101, P1516, P2096, P2097, P2101, P2119, P2135, P2176 are not set.
• The ignition voltage is between 10-32 V.
• The fuel level is greater than 10%.
• DTC P013A, P013E, P013F, P2270 and P2271 have run.
• DTC P013F and P2271 have passed.
• DTC P013B runs once per trip.

P013E

• DTCs P0068, P0096, P0097, P0098, P00B6, P0101, P0102, P0103, P0106, P0107, P0108, P0111, P0112, P0113, P0114, P0116, P0117, P0118, P0119, P0121, P0122, P0123, P0171, P0172, P0201, P0202, P0203, P0204, P0222, P0223, P0300, P1101, P1516, P2096, P2097, P2101, P2119, P2135, P2176 are not set.
• The ignition voltage is between 10-32 V.
• The fuel level is greater than 10%.
• DTC P013A, P013B, P013F, P2270 and P2271 have run.
• DTC P2270 have passed.
• DTC P013E runs once per trip.

P013F

• DTCs P0068, P0096, P0097, P0098, P00B6, P0101, P0102, P0103, P0106, P0107, P0108, P0111, P0112, P0113, P0114, P0116, P0117, P0118, P0119, P0121, P0122, P0123, P0171, P0172, P0201, P0202, P0203, P0204, P0222, P0223, P0300, P1101, P1516, P2096, P2097, P2101, P2119, P2135, P2176 are not set.
• The ignition voltage is between 10-32 V.
• The fuel level is greater than 10%.
• DTC P013A, P013B, P013E, P2270 and P2271 have run.
• DTC P2270 and P2271 have passed.
• DTC P013F runs once per trip.

P015A and P015B

• DTCs P0068, P0101, P0102, P0103, P0106, P0107, P0108, P0111, P0112, P0113, P0114, P0116, P0117, P0118, P0119, P0121, P0122, P0123, P0128, P0131, P0132, P0134, P0171, P0172, P0201, P0202, P0203, P0204, P0222, P0223, P0300, P0442, P0443, P0446, P0449, P0452, P0453, P0455, P0496, P16F3, P2101 or P2135 are not set.
• The ignition voltage is between 10-32 V.
• The device controls are not active.
• The fuel level is greater than 10%.
• The HO2S heater is commanded ON for greater than 40 s.
• The engine coolant temperature (ECT) is hotter than 60ºC (140ºF).
• The intake air temperature (IAT) is hotter than -40ºC (-40ºF).
• The engine has been operating for greater than 150 s.
• The engine speed is between 1 550-3 500 RPM to initially enable the test.
• The vehicle speed is between 70-125 km/h (44-78 mph) to initially enable the test.
• The engine speed is between 1 350-3 650 RPM to keep the test enabled.
• The vehicle speed is between 65-130 km/h (41-81 mph) to keep the test enabled.
• The mass air flow (MAF) is between 2-20 g/s.
• The fuel system is in Closed Loop.
• The evaporative emission (EVAP) diagnostics are not in control of purge.
• The predicted catalytic converter temperature is between 550-900ºC (1 022-1 652ºF).
• DTC P015A runs once per trip, during the deceleration fuel cut-off (DFCO) mode, when the above conditions are met.
• DTC P015B runs once per trip, during the fuel enrich mode, when the above conditions are met.

P2270

• DTCs P0068, P0096, P0097, P0098, P00B6, P0101, P0102, P0103, P0106, P0107, P0108, P0111, P0112, P0113, P0114, P0116, P0117, P0118, P0119, P0121, P0122, P0123, P0171, P0172, P0201, P0202, P0203, P0204, P0222, P0223, P0300, P1101, P1516, P2096, P2097, P2101, P2119, P2135, P2176 are not set.
• The ignition voltage is between 10-32 V.
• The fuel level is greater than 10%.
• The engine speed parameter is between 1 100-3 500 RPM.
• The mass air flow (MAF) is between 1-30 g/s.
• The fuel composition is less than 87% ethanol.
• The fuel system is in Closed Loop.
• DTC P013A, P013B, P013E, P013F, P2270 and P2271 have run.
• DTC P2270 and P2271 have passed.
• DTC P2270 runs once per drive cycle when the above conditions are met for 5 s.

P2271

• DTCs P0068, P0096, P0097, P0098, P00B6, P0101, P0102, P0103, P0106, P0107, P0108, P0111, P0112, P0113, P0114, P0116, P0117, P0118, P0119, P0121, P0122, P0123, P0171, P0172, P0201, P0202, P0203, P0204, P0222, P0223, P0300, P1101, P1516, P2096, P2097, P2101, P2119, P2135, P2176 are not set.
• The ignition voltage is between 10-32 V.
• The fuel level is greater than 10%.
• The engine speed parameter is between 1 100-3 500 RPM.
• The mass air flow (MAF) is between 1-30 g/s.
• The fuel composition is less than 87% ethanol.
• The fuel system is in Closed Loop.
• DTC P013A, P013B, P013E, P013F and P2270 have run.
• DTC P013A, P013E and P2270 have passed.
• DTC P2270 runs once per drive cycle when the above conditions are met for 5 s.

Conditions for Setting the DTC

P0133

• The ECM detects that the HO2S 1 average response time is more than a calculated value.
• DTC P0133 sets within 60 s when the above condition is met.

P013A

The ECM detects that the accumulated mass air flow monitored during rich to lean transitions between 150-450 mV is more than 6 g.

P013B

The ECM detects that the accumulated mass air flow monitored during rich to lean transitions between 335-650 mV is more than 25 g.

P013E

The ECM detects that the Post O2 sensor voltage is greater than 450 mV and the accumulated mass air flow monitored during the delayed Response Test is greater than 20 g.

P013F

The ECM detects that the Post O2 sensor voltage is less than 350 mV and the accumulated mass air flow monitored during the delayed Response Test is greater than 70 g.

P0140

The ECM detects that the heated oxygen sensor (HO2S) 2 parameter is greater than 1 700 mV.

P2270

• The ECM detects that the heated oxygen sensor (HO2S) 2 sensor cannot achieve voltage equal to or less than 775 mV.

and

• The ECM detects that the accumulated mass air flow monitored during the Stuck Lean Voltage Test is more than 38 g.

P2271

• The ECM detects that the heated oxygen sensor (HO2S) 2 sensor cannot achieve voltage equal to or less than 100 mV.

and

• The ECM detects that the accumulated mass air flow monitored during the stuck rich voltage test is more than 25 g.

Action Taken When the DTC Sets

• DTCs P0133, P0134, P013E, P013F, P0140, P2270 are P2271 Type B DTCs.
• DTCs P013A and P013B are Type A DTCs.

Conditions for Clearing the DTC

• DTCs P0133, P0134, P013E, P013F, P0140, P2270 are P2271 Type B DTCs.
• DTCs P013A and P013B are Type A DTCs.

Reference Information

Schematic Reference

• Engine Controls Schematics (Encore) , Engine Controls Schematics (Trax)

Connector End View Reference

WIRING SYSTEMS AND POWER MANAGEMENT - COMPONENT CONNECTOR END VIEWS - INDEX - ENCORE WIRING SYSTEMS AND POWER MANAGEMENT - COMPONENT CONNECTOR END VIEWS - INDEX - TRAX

Electrical Information Reference

• Circuit Testing
• Connector Repairs
• Testing for Intermittent Conditions and Poor Connections
• Wiring Repairs

DTC Type Reference

Powertrain Diagnostic Trouble Code (DTC) Type Definitions (LUV) , Powertrain Diagnostic Trouble Code (DTC) Type Definitions (2H0)

Scan Tool Reference

Control Module References for scan tool information

Circuit/System Verification

1. Ignition ON.
2. Verify no HO2S heater DTCs are set

• If a HO2S heater DTC is set

Refer to DTC P0131, P0132, P0134, P0137, P0138, or P0140 (LUV), DTC P0131, P0132, P0134, P0137, P0138, or P0140 (LUJ).

• If no HO2S heater DTC is set

3. Allow the engine to reach operating temperature, engine running.
4. Verify the scan tool HO2S Sensor 1 or 2 voltage parameters are between 50-1 050 mV.

• If not between 50-1 050 mV

Refer to DTC P0131, P0132, P0134, P0137, P0138, or P0140 (LUV), DTC P0131, P0132, P0134, P0137, P0138, or P0140 (LUJ).

• If between 50-1 050 mV

5. Verify none of the following conditions exist:

• Lean or rich fuel injectors
• Water intrusion in the HO2S harness connector
• Low or high fuel system pressure-Refer to Fuel System Diagnosis (LUJ) , Fuel System Diagnosis (LUV) .
• Fuel that is contaminated-Refer to Alcohol/Contaminants-in-Fuel Diagnosis .
• Fuel saturation of the evaporative emission (EVAP) canister
• Exhaust leaks
• Engine vacuum leaks
• Engine oil consumptions-Refer to Symptoms - Engine Cooling .
• Engine coolant consumption-Refer to Symptoms - Engine Cooling .
• If any of the above conditions exist

Repair as necessary.

• If none of the above conditions exist

6. Operate the vehicle within the Conditions for Running the DTC. You may also operate the vehicle within the conditions that you observed from the Freeze Frame/Failure Records data.
7. Verify the DTC does not set.

• If the DTC sets

Replace the B52 Heated Oxygen Sensor.

• If the DTC does not set

8. All OK.

Repair Instructions

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

• Heated Oxygen Sensor Replacement - Sensor 1
• Heated Oxygen Sensor Replacement - Sensor 2
• Perform the scan tool Heated Oxygen Sensor Resistance Learn Reset after replacing a HO2S.
• Control Module References for ECM replacement, programming and setup

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