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 P0030 or P0036
| Step | Action | Values | Yes | No |
|---|---|---|---|---|
| Schematic Reference: Engine Controls Schematics Connector End View Reference: Powertrain Control Module (PCM) 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 in Vehicle DTC Information |
| 2 |
|
0.2-1.7 A | Go to Step 3 | Go to Step 4 |
| 3 |
|
- | Go to Step 4 | Go to Intermittent Conditions |
| 4 |
|
- | Go to Step 5 | Go to Step 6 |
| 5 | Test the ignition 1 voltage circuit for a short to ground. Refer to Circuit Testing
, Wiring Repairs
, and Heated Oxygen Sensor (HO2S) Wiring Repairs
in Wiring Systems. Did you find and correct the condition? |
- | Go to Step 18 | Go to Step 8 |
| 6 |
|
- | Go to Step 7 | Go to Step 15 |
| 7 |
|
- | Go to Step 10 | Go to Step 9 |
| 8 | Test the ignition 1 voltage circuit on the sensor side of the HO2S 1 connector for a short to ground. Refer to Circuit Testing
in Wiring Systems. Is the sensor shorted to ground? |
- | Go to Step 16 | Go to Intermittent Conditions |
| 9 | Start the engine with the test lamp still connected from the previous step. Is the test lamp ON steady or blinking? |
- | Go to Step 13 | Go to Step 11 |
| 10 | Test the HO2S heater low control circuit for a short to ground. Refer to Circuit Testing
, Wiring Repairs
, and Heated Oxygen Sensor (HO2S) Wiring Repairs
in Wiring Systems. Did you find and correct the condition? |
- | Go to Step 18 | Go to Step 14 |
| 11 | Test the HO2S heater low control circuit for a short to voltage. Refer to Circuit Testing
, Wiring Repairs
, and Heated Oxygen Sensor (HO2S) Wiring Repairs
in Wiring Systems. Did you find and correct the condition? |
- | Go to Step 18 | Go to Step 12 |
| 12 | Test the HO2S heater low control circuit for an open or for high resistance. Refer to Circuit Testing
, Wiring Repairs
, and Heated Oxygen Sensor (HO2S) Wiring Repairs
in Wiring Systems. Did you find and correct the condition? |
- | Go to Step 18 | Go to Step 14 |
| 13 | Test for shorted terminals and for poor connections at the HO2S. Refer to Testing for Intermittent Conditions and Poor Connections
, Connector Repairs
, and Heated Oxygen Sensor (HO2S) Wiring Repairs
in Wiring Systems. Did you find and correct the condition? |
- | Go to Step 18 | Go to Step 16 |
| 14 | Test for shorted terminals and for poor connections at the powertrain control module (PCM). Refer to Testing for Intermittent Conditions and Poor Connections
, Connector Repairs
, Heated Oxygen Sensor (HO2S) Wiring Repairs
in Wiring Systems. Did you find and correct the condition? |
- | Go to Step 18 | Go to Step 17 |
| 15 | Repair the open or high resistance in the ignition 1 voltage circuit. Refer to Wiring Repairs
and Heated Oxygen Sensor (HO2S) Wiring Repairs
in Wiring Systems. Did you complete the repair? |
- | Go to Step 18 | - |
| 16 |
NOTE:
Refer to Heated Oxygen Sensor (HO2S) Resistance Learn Reset Notice
in Cautions and Notices. Replace the affected HO2S. Refer to Heated Oxygen Sensor (HO2S) Replacement (Pre-Catalyst)
or Heated Oxygen Sensor (HO2S) Replacement (Post-Catalyst)
.Did you complete the replacement? |
- | Go to Step 18 | - |
| 17 | Replace the PCM. Refer to Control Module References
in Computer/Integrating Systems for replacement, setup, and programming. Did you complete the replacement? |
- | Go to Step 18 | - |
| 18 |
|
- | Go to Step 2 | Go to Step 19 |
| 19 | 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 in Vehicle DTC Information | System OK |