DTC P0012:00 [L3 Turbo]SM2444071
DTC P0012:00 [L3 Turbo]

id0102b7700200

DTC P0012:00

CMP timing over-retarded
DETECTION CONDITION
• Actual valve timing is over-retarded by 10 °(when the following conditions are met) from the target valve timing for 5 s when the OCV system control is within the feed-back range.
MONITORING CONDITIONS
― Engine speed: below 4,000 rpm
― Engine coolant temperature: 70—110 °C {158—230 °F}
Diagnostic support note
• This is a continuous monitor (CCM).
• MIL illuminates if the PCM detects the above malfunction condition in two consecutive drive cycles or in one drive cycle while the DTC for the same malfunction has been stored in the PCM.
• PENDING CODE is available if the PCM detects the above malfunction condition during the first drive cycle.
• FREEZE FRAME DATA (Mode 2)/Snapshot data is available.
• DTCs are stored in the PCM memory.
POSSIBLE CAUSE
• Low engine oil pressure
• Loose timing chain or improper valve timing due to timing chain slippage
• OCV malfunction
• Spool valve in OCV is stuck in the retard position.
• Variable valve timing actuator is stuck in the retard position.
• Following oil runners are clogged or have leakage.
― Between oil pressure switch and OCV
― Between OCV and variable valve timing actuator
― In variable valve timing actuator
• PCM malfunction

Diagnostic procedure

STEP

INSPECTION

ACTION
1
VERIFY FREEZE FRAME DATA (MODE 2)/SNAPSHOT DATA HAS BEEN RECORDED
• Has the FREEZE FRAME DATA (Mode 2)/snapshot data been recorded?
Yes
Go to the next step.
No
Record the FREEZE FRAME DATA (Mode 2)/snapshot data on repair order, then go to the next step.
2
VERIFY RELATED SERVICE INFORMATION AVAILABILITY
• Verify related Service Information availability.
• Is any related Service Information available?
Yes
Perform repair or diagnosis according to the available Service Information.
• If the vehicle is not repaired, go to the next step.
No
Go to the next step.
3
VERIFY RELATED PENDING CODE AND STORED DTCS
• Turn the ignition switch off, then to the ON position (engine off).
• Perform the DTC Reading Procedure. (See ON-BOARD DIAGNOSTIC TEST [L3 Turbo].)
• Is the DTC P2088:00 or P2089:00 present?
Yes
Go to the applicable DTC inspection.
(See DTC P2088:00 [L3 Turbo].)
(See DTC P2089:00 [L3 Turbo].)
No
Go to the next step.
4
VERIFY ENGINE OIL PRESSURE
• Start the engine.
• Does the oil pressure warning light illuminate?
Yes
Inspect the engine oil pressure.
(See OIL PRESSURE INSPECTION [L3 Turbo].)
Repair or replace the malfunctioning part according to the inspection results, then go to Step 10.
No
Go to the next step.
5
VERIFY TIMING CHAIN INSTALLATION
• Stop the engine.
• Remove the timing chain cover. (See TIMING CHAIN REMOVAL/INSTALLATION [L3 Turbo].)
• Is the camshaft timing mark at the correct point?
Yes
Go to the next step.
No
Reinstall the timing chain, then go to Step 10.
(See TIMING CHAIN REMOVAL/INSTALLATION [L3 Turbo].)
6
INSPECT OCV
• Inspect the OCV. (See OIL CONTROL VALVE (OCV) INSPECTION [L3 Turbo].)
• Is there any malfunction?
Yes
Replace the OCV, then go to Step 10.
(See OIL CONTROL VALVE (OCV) REMOVAL/INSTALLATION [L3 Turbo].)
No
Go to the next step.
7
INSPECT STOPPER PIN MECHANISM
• Remove the timing chain. (See TIMING CHAIN REMOVAL/INSTALLATION [L3 Turbo].)
• Inspect the stopper pin mechanism. (See VARIABLE VALVE TIMING ACTUATOR INSPECTION [L3 Turbo].)
• Is the stopper pin mechanism normal?
Yes
Go to the next step.
No
Replace the variable valve timing actuator, then go to Step 10.
(See VARIABLE VALVE TIMING ACTUATOR REMOVAL/INSTALLATION [L3 Turbo].)
8
INSPECT ROTOR POSITION
• Remove the variable valve timing actuator. (See VARIABLE VALVE TIMING ACTUATOR REMOVAL/INSTALLATION [L3 Turbo].)
• Is the rotor position at the maximum valve timing retard?
Yes
Replace the variable valve timing actuator, then go to Step 10.
(See VARIABLE VALVE TIMING ACTUATOR REMOVAL/INSTALLATION [L3 Turbo].)
No
Variable valve timing mechanism is normal.
Note
• This DTC is detected as an intermittent concern.
• The intermittent concern might be removed using the cleaning mode of the variable valve timing control function.
Go to the next step.
9
INSPECT ENGINE OIL RUNNER
• Inspect the following engine oil runners for clogging or leakage.
― Between the oil pressure switch and the OCV
― Between the OCV and the variable valve timing actuator
― In the variable valve timing actuator
• Is there any clogging or leakage?
Yes
Repair or replace the suspected runner, then go to the next step.
No
Variable valve timing mechanism is normal.
Note
• This DTC is detected as an intermittent concern.
• The intermittent concern might be removed using the cleaning mode of the variable valve timing control function.
Go to the next step.
10
VERIFY DTC TROUBLESHOOTING COMPLETED
• Make sure to reconnect all disconnected connectors.
• Clear the DTC from the PCM memory using the M-MDS. (See AFTER REPAIR PROCEDURE [L3 Turbo].)
• Turn the ignition switch off.
• Start the engine and warm it up completely.
• Perform the KOER self test. (See KOEO/KOER SELF TEST [L3 Turbo].)
• Is the PENDING CODE for this DTC present?
Yes
Replace the PCM, then go to the next step.
(See PCM REMOVAL/INSTALLATION [L3 Turbo].)
No
Go to the next step.
11
VERIFY AFTER REPAIR PROCEDURE
• Perform the “AFTER REPAIR PROCEDURE”. (See AFTER REPAIR PROCEDURE [L3 Turbo].)
• Are any DTCs present?
Yes
Go to the applicable DTC inspection.
(See DTC TABLE [L3 Turbo].)
No
DTC troubleshooting completed.