PRE-RELEASE
DTC P0130-P0134 (LLU)
| DTC P0130-P0134 (LLU) |
| 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 Descriptor |
DTC P0130 00
HO2S Circuit Sensor 1
DTC P0131 00
HO2S Circuit Low Voltage Sensor 1
DTC P0132 00
HO2S Circuit High Voltage Sensor 1
DTC P0133 00
HO2S Slow Response Sensor 1
DTC P0134 00
HO2S Circuit Insufficient Activity Sensor 1
| Diagnostic Fault Information |
| Circuit | Short to Ground | Open/High Resistance | Short to Voltage | Signal Performance |
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Heater Voltage Supply
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P0031 00, P0130 00
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P0030 00, P0130 00, P0135 00
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-
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-
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Ignition Voltage
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Opens Fuse
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P0134 00
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-
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Signal Circuit
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P0131 00
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P0134 00
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P0132 00
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P0133 00, P0134 00
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Heater Low Control
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P0031 00, P0130 00
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P0031 00, P0135 00
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P0132 00
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-
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| Circuit/System Description |
Heated Oxygen Sensors 1 or 2 are used for fuel control and post catalyst monitoring. Each heated oxygen sensor compares the oxygen content of the surrounding air with the oxygen content in the exhaust stream. The heated oxygen sensors must reach operating temperature to provide an accurate voltage signal. Heating elements inside the heated oxygen sensor minimize the time required for the sensors to reach operating temperature. The engine control module (ECM) supplies a reference or bias voltage of about 450 mV to the heated oxygen sensor. When the engine starts, the ECM works in open loop control and ignores the voltage signal from the heated oxygen sensor. Once the heated oxygen sensor reaches operating temperature and closed loop is achieved, the heated oxygen sensor generates a voltage within a range of 0-1 000 mV that fluctuates above and below bias voltage. High heated oxygen sensor voltage indicates a rich exhaust stream. Low heated oxygen sensor voltage indicates a lean exhaust stream.
| Conditions for Running the DTC |
P0130 00
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DTCs P0030 00, P0031 00, P0032 00, P0130 00, P0131 00, P0132 00, P0133 00, P0134 00, or P0135 00, are not set.
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The engine is running.
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The ignition voltage is between 11-18 V.
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DTC P0130 00 runs continuously after the above conditions have been met for 3 s.
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P0131 00
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DTCs P0030 00, P0031 00, P0032 00, P0036 00, P0037 00, P0038 00, P0102 00, P0103 00, P0131 00, P0132 00, P0133 00, P0134 00, P0135 00, P0137 00, P0138 00, P0140 00, P0141 00, P0458 00, P0459 00, P2270 00, or P2271 00 are not set.
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The engine is running.
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The ignition voltage is between 11-18 V.
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DTC P0131 00 runs continuously when the above conditions are met for 2 s.
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P0132 00
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DTCs P0030 00, P0031 00, P0032 00, P0130 00, P0131 00, P0133 00, P0134 00, or P0135 00 are not set.
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The engine is running.
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The ignition voltage is between 11-18 V.
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DTC P0132 00 runs the rich test continuously when the above conditions are met for 5.5 s.
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P0133 00
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DTCs P0016 00, P0030 00, P0031 00, P0032 00, P0101 00, P0102 00, P0103 00, P0116 00, P0117 00, P0118 00, P0121 00, P0122 00, P0123 00, P0130 00, P0131 00, P0132 00, P0134 00, P0135 00, P0171 00, P0172 00, P0221 00, P0222 00, P0223 00, P0300 00, P0301 00, P0302 00, P0303 00, P0304 00, P0313 00, P0335 00, P0336 00, P0341 00, P0458 00, P0459 00, P2101 00 or P2176 00 are not set.
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The Engine Speed parameter is between 1 500-3 500 RPM.
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The air flow into the engine is greater than 27.5-120 g/s.
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The engine coolant temperature is hotter than 50.25°C (122.45°F).
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DTC P0133 00 runs continuously.
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P0134 00
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DTCs P0030 00, P0031 00, P0032 00, P0130 00, P0131 00, P0132 00, P0133 00, P0134 00, or P0135 00 are not set.
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The engine is running.
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The ignition voltage is between 11-18 V.
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DTC P0134 00 runs continuously when the above conditions are met for 20 s.
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| Conditions for Setting the DTC |
P0130 00
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The ECM detects that the resistance of the heated oxygen sensors (HO2S) 1 or 2 circuit is more than 60 000 Ω.
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DTC P0130 00 sets within 5 s after the above condition is met.
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P0131 00
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The ECM detects that the HO2S 1 voltage parameter is less than 24 mV.
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DTC P0131 00 sets within 20 s when the above condition is met.
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P0132 00
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The ECM detects that the heated oxygen sensors 1 parameter is more than 1 200 mV.
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DTC P0132 00 sets within 5.5 s when the above condition is met.
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P0133 00
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The ECM detects that the heated oxygen sensors 1 rich to lean or lean to rich average response time is more than 0.1 s.
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DTC P0133 00 sets within 2.5 s when the above condition is met.
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P0134 00
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The ECM detects that the activity of the heated oxygen sensors 1 is less than a calibrated value.
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DTC P0134 00 sets within 20 s after the above condition is met.
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| Action Taken When the DTC Sets |
DTCs P0130 00, P0131 00, P0132 00, P0133 00, P0134 00 are Type B DTCs.
| Conditions for Clearing the DTC |
DTCs P0130 00, P0131 00, P0132 00, P0133 00, P0134 00 are Type B DTCs.
| 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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Heated Oxygen Sensor Wiring Repairs
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DTC Type Reference
Powertrain Diagnostic Trouble Code (DTC) Type Definitions
Scan Tool Reference
Control Module References for scan tool information
| Circuit/System Verification |
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Clear the DTCs with a scan tool.
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| 2. |
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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| Circuit/System Testing |
| Note | ||
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You must perform the circuit/system verification before proceeding with circuit/system testing. |
| 1. |
Ignition OFF, disconnect the harness connector at the B52A Heated Oxygen Sensor 1. Allow sufficient time for the K20 Engine Control Module to completely power down.
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| 2. |
Ignition OFF, test for less than 5 Ω between the B52A Heated Oxygen Sensor 1 harness connector low reference circuit terminal 3 and ground.
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| 3. |
If greater than 5 Ω, test the low reference circuit for an open/high resistance. If the circuit tests normal, replace the K20 Engine Control Module.
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Ignition ON, verify the HO2S 1 scan tool HO2S Sensor 1 parameter is approximately 450 mV.
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If greater than the specified value, check the high signal circuit for the B52A heated oxygen sensor 1 for a short to voltage. If the circuit tests normal, replace the K20 engine control module.
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If lower than the specified value, test the high signal circuit for the B52A heated oxygen sensor 1 for a short to ground. If the circuit tests normal, replace the K20 engine control module.
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| 7. |
Ignition ON, install a 3 A fused jumper wire at the B52A Heated Oxygen Sensor 1 high signal circuit terminal 4. Toggle the other end of the jumper wire between the B52A Heated Oxygen Sensor 1 low signal circuit terminal 3 and battery voltage. Verify the HO2S 1 scan tool HO2S Sensor 1 parameter toggles between 0 mV and approximately 5 000 mV.
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| 8. |
If the HO2S 1 scan tool HO2S Sensor 1 parameter does not toggle correctly, test the B52A Heated Oxygen Sensor 1 high signal circuit for an open/high resistance. If the circuits test normal, replace the K20 Engine Control Module.
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| 9. |
If all circuits test normal, replace the B52A Heated Oxygen Sensor 1.
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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 (LLU/A16LET)
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Control Module References
for ECM replacement, setup, and programming
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