P0012

DTC P0011 / P0012

DTC Detecting Condition and Trouble Area






Wiring Diagram

Refer to P0010 DTC P0010.

DTC Confirmation Procedure

WARNING:

If you do not select a suitable route and take proper precautions when performing a road test, an accident can occur.

- Select a level road with no traffic to minimize the risk of accident.
- Perform the test extremely carefully.
- Perform the road test using 2 persons, a driver and an assistant.

NOTE:

If DTCs other than aimed DTC are previously detected in DTC confirmation procedure, be sure to troubleshoot DTC previously detected.

1) Warm up engine to normal operating temperature.
2) Accelerate vehicle to 80 km/h (50 mile/h) or more.

DTC Troubleshooting

1.
Was "Engine and Emission Control System Check" performed?
YES -
Go to Step 2.
NO -
Go to Engine and Emission Control System Check Engine and Emission Control System Check.

2. DTC check

Check DTC.

Is there DTC(s) other than P0011 and P0012?
YES -
Go to applicable DTC(s).
NO -
Go to Step 3.

3. OCV drive circuit and OCV ground circuit check

Check OCV drive circuit and OCV ground circuit according to Step 2 under P0010 DTC P0010.

Are they in good condition?
YES -
Go to Step 4.
NO -
Repair or replace defective wire harness.

4. Oil pressure check

Check oil pressure. Testing and Inspection

Is it in good condition?
YES -
Go to Step 5.
NO -
Repair or replace defective parts.

5. OCV oil circuit visual check

Remove cylinder head cover. Cylinder Head Cover Removal and Installation
Check oil pressure leakage from OCV oil circuit.

Is it in good condition?
YES -
Go to Step 6.
NO -
Repair or replace defective parts.

6. CKP sensor and sensor plate check

Check CKP sensor and sensor plate.
- CKP sensor inspection: Crankshaft Position (CKP) Sensor Inspection
- Sensor plate inspection: Sensor Plate Inspection

Are they in good condition?
YES -
Go to Step 7.
NO -
Repair or replace defective parts.

7. CMP sensor and signal rotor check

Check CMP sensor and signal rotor. Camshaft Position (CMP) Sensor Inspection

Are they in good condition?
YES -
Go to Step 8.
NO -
Repair or replace defective parts.

8. OCV check

Remove OCV. OCV (Oil Control Valve) Removal and Installation
Check OCV for clogging or sludge.

Is it in good condition?
YES -
Go to Step 9.
NO -
Repair or replace OCV.

9. OCV check

Check OCV. OCV (Oil Control Valve) Inspection

Is it in good condition?
YES -
Go to Step 10.
NO -
Replace OCV.

10. CMP actuator check

Check CMP actuator. Camshaft and Tappet Inspection

Is it in good condition?
YES -
Go to Step 11.
NO -
Replace CMP actuator.

11. Valve timing check

Check valve timing. Timing Chain and Chain Tensioner Removal and Installation

Is it in good condition?
YES -
Substitute a known-good ECM and recheck.
NO -
Adjust valve timing.