DTC P0012:00 [MZR 1.3, MZR 1.5]

id0102f8700200

DTC P0012:00

CMP-timing over-retarded

DETECTION CONDITION

•  If the actual valve timing retards excessively against the target valve timing with the following condition met:

―  Variable valve timing control: feedback hold mode

Diagnostic support note

•  This is a continuous monitor (CCM).

•  The 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 first drive cycle.

•  FREEZE FRAME DATA (Mode 2)/Snapshot data is available.

•  The DTC is stored in the PCM memory.

POSSIBLE CAUSE

•  Engine oil malfunction

―  Low engine oil pressure

―  Improper engine oil viscosity

•  Loose timing chain or improper valve timing due to timing chain slippage

•  OCV malfunction

―  Spool valve in OCV is stuck in retard position

•  Variable valve timing actuator is stuck in retard position

•  Following engine 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

DTC P0012:00	CMP-timing over-retarded
DETECTION CONDITION	• If the actual valve timing retards excessively against the target valve timing with the following condition met: ― Variable valve timing control: feedback hold mode Diagnostic support note • This is a continuous monitor (CCM). • The 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 first drive cycle. • FREEZE FRAME DATA (Mode 2)/Snapshot data is available. • The DTC is stored in the PCM memory.
POSSIBLE CAUSE	• Engine oil malfunction ― Low engine oil pressure ― Improper engine oil viscosity • Loose timing chain or improper valve timing due to timing chain slippage • OCV malfunction ― Spool valve in OCV is stuck in retard position • Variable valve timing actuator is stuck in retard position • Following engine 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.
1		No	Record the FREEZE FRAME DATA (Mode 2)/snapshot data on the 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.
2		No	Go to the next step.
3	VERIFY ENGINE OIL PRESSURE • Start the engine. • Does the oil pressure warning light illuminate?	Yes	Inspect the engine oil pressure. (See OIL PRESSURE INSPECTION [MZR 1.3, MZR 1.5].) • Repair or replace the malfunctioning part according to the inspection results, if necessary. Go to Step 8.
3		No	Go to the next step.
4	INSPECT INSTALLATION OF TIMING CHAIN • Stop the engine. • Inspect the installation of timing chain. (See TIMING CHAIN REMOVAL/INSTALLATION [MZR 1.3, MZR 1.5].) • Is the camshaft timing mark at the correct point?	Yes	Go to the next step.
4		No	Reinstall the timing chain, then go to Step 8. (See TIMING CHAIN REMOVAL/INSTALLATION [MZR 1.3, MZR 1.5].)
5	INSPECT OCV • Inspect the OCV. (See OIL CONTROL VALVE (OCV) INSPECTION [MZR 1.3, MZR 1.5].) • Is there any malfunction?	Yes	Replace the OCV, then go to Step 8. (See OIL CONTROL VALVE (OCV) REMOVAL/INSTALLATION [MZR 1.3, MZR 1.5].)
5		No	Go to the next step.
6	INSPECT ROTOR POSITION • Remove the variable valve timing actuator. (See VARIABLE VALVE TIMING ACTUATOR REMOVAL/INSTALLATION [MZR 1.3, MZR 1.5].) • Is the rotor at the maximum valve timing retard position?	Yes	Replace the variable valve timing actuator, then go to Step 8. (See VARIABLE VALVE TIMING ACTUATOR REMOVAL/INSTALLATION [MZR 1.3, MZR 1.5].)
6		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.
7	INSPECT ENGINE OIL RUNNER • Inspect the following engine oil runners for clogging or leakage: ― Between oil pressure switch and OCV ― Between OCV and variable valve timing actuator ― In variable valve timing actuator • Is there any clogging or leakage?	Yes	Repair or replace the suspected runner, then go to the next step.
7		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.
8	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 [MZR 1.3, MZR 1.5].) • Start the engine. • Access the RPM PID using the M-MDS. (See ON-BOARD DIAGNOSTIC TEST [MZR 1.3, MZR 1.5].) • Warm-up the engine completely. • Turn off all electrical roads. • Increase and keep the engine speed at 2,500 rpm or more for 10 s. • Perform the KOER self test. (See KOEO/KOER SELF TEST [MZR 1.3, MZR 1.5].) • Is the PENDING CODE for this DTC present?	Yes	Repeat the inspection from Step 1. • If the malfunction recurs, replace the PCM. (See PCM REMOVAL/INSTALLATION [MZR 1.3, MZR 1.5].) Go to the next step.
8		No	Go to the next step.
9	VERIFY AFTER REPAIR PROCEDURE • Perform the “AFTER REPAIR PROCEDURE”. (See AFTER REPAIR PROCEDURE [MZR 1.3, MZR 1.5].) • Are any DTCs present?	Yes	Go to the applicable DTC inspection. (See DTC TABLE [MZR 1.3, MZR 1.5].)
9		No	DTC troubleshooting completed.