Conditions for Clearing the MIL/DTC
WARNING: This page is about a different variant/trim than selected.
- The control module turns OFF the malfunction indicator lamp (MIL) after 3 consecutive ignition cycles that the diagnostic runs and does not fail.
- A current DTC, Last Test Failed, clears when the diagnostic runs and passes.
- A history DTC clears after 40 consecutive warm-up cycles, if no failures are reported by this or any other emission related diagnostic.
- Clear the MIL and the DTC with a scan tool.
DTC P1134
| Step | Action | Value(s) | Yes | No |
|---|---|---|---|---|
| Schematic Reference: Engine Controls Schematics Connector End View Reference: Engine Control Module (ECM) Connector End Views or Engine Controls Connector End Views |
||||
| 1 | Did you perform the Diagnostic System Check - Vehicle? | - | Go to Step 2 | Go to Diagnostic System Check - Vehicle |
| 2 |
|
300-600 mV | Go to Step 3 | Go to Step 4 |
| 3 |
|
- | Go to Step 4 | Go to Intermittent Conditions |
| 4 |
|
100 mV | Go to Step 6 | Go to Step 5 |
| 5 | Is the HO2S 1 parameter more than the specified value? | 800 mV | Go to Step 7 | Go to Step 9 |
| 6 | Test the HO2S 1 high signal circuit for a short to ground. Refer to Circuit Testing
and Wiring Repairs
. Did you find and correct the condition? |
- | Go to Step 17 | Go to Step 8 |
| 7 |
IMPORTANT:
The sensor may be damaged if the circuit is shorted to a voltage source. Test the HO2S 1 high signal circuit for a short to voltage. Refer to Circuit Testing
and Wiring Repairs
.Did you find and correct the condition? |
- | Go to Step 17 | Go to Step 16 |
| 8 | Test the HO2S 1 high signal circuit for a short to the HO2S low signal circuit or to the HO2S heater low control circuit. Refer to Circuit Testing
and Wiring Repairs
. Did you find and correct the condition? |
- | Go to Step 17 | Go to Step 16 |
| 9 |
|
100 mV | Go to Step 10 | Go to Step 12 |
| 10 |
|
100 mV | Go to Step 13 | Go to Step 11 |
| 11 | Test the HO2S 1 low signal circuit for an open. Refer to Circuit Testing
and Wiring Repairs
. Did you find and correct the condition? |
- | Go to Step 17 | Go to Step 14 |
| 12 | Test the HO2S 1 high signal circuit for an open. Refer to Circuit Testing
and Wiring Repairs
. Did you find and correct the condition? |
- | Go to Step 17 | Go to Step 14 |
| 13 | Test for an intermittent and for a poor connection at the HO2S 1. Refer to Testing for Intermittent Conditions and Poor Connections
and Connector Repairs
. Did you find and correct the condition? |
- | Go to Step 17 | Go to Step 15 |
| 14 | Test for an intermittent and for a poor connection at the engine control module (ECM). Refer to Testing for Intermittent Conditions and Poor Connections
and Connector Repairs
. Did you find and correct the condition? |
- | Go to Step 17 | Go to Step 16 |
| 15 |
NOTE:
Refer to Silicon Contamination of Heated Oxygen Sensors Notice
in Cautions and Notices.
IMPORTANT:
The HO2S may be damaged due to contamination. Prior to replacing the HO2S inspect for the following sources of contamination:
|
- | Go to Step 17 | - |
| 16 | Replace the ECM. Refer to Control Module References
for replacement, setup, and programming. Did you complete the replacement? |
- | Go to Step 17 | - |
| 17 |
|
- | Go to Step 2 | Go to Step 18 |
| 18 | Observe the Capture Info with a scan tool. Are there any DTCs that have not been diagnosed? |
- | Go to Diagnostic Trouble Code (DTC) List - Vehicle | System OK |