DTC Advanced Diagnostics: P0010
DTC P0010:Variable Valve Timing Control (VTC) Oil Control Solenoid Valve A Malfunction

General Description

The variable valve timing control (VTC) oil control solenoid valve A circuit is monitored for electrical faults. The diagnosis is performed by a dedicated integrated circuit which is capable of detecting a short circuit to the battery, a short circuit to ground as well as circuit continuity faults. If the VTC oil control solenoid valve A voltage is out of normal range, the powertrain control module (PCM) detects a malfunction and stores a DTC.

Monitor Execution, Sequence, Duration, DTC Type
Execution
Continuous
Sequence
None
Duration
0.1 second or more*, 0.3 second or more**
DTC Type
One drive cycle, MIL on
*: Open or short circuit to ground
**: Short circuit to power

Enable Conditions
Condition
Minimum
Maximum
Engine speed [Engine Speed]
80 rpm
–
12 volt battery voltage [Battery]
8 V
16 V
[ ]: HDS Parameter

Malfunction Threshold
Open circuit
VTC oil control solenoid valve A output voltage is between 2.2 - 2.8 V for at least 0.1 second during VTC oil control solenoid valve A power stage is off.
Short circuit to power
VTC oil control solenoid valve A output voltage is between 2.8 - 5.0 V for at least 0.3 second during VTC oil control solenoid valve A power stage is on.
Short circuit to ground
VTC oil control solenoid valve A output voltage is between 0 - 2.2 V for at least 0.1 second during VTC oil control solenoid valve A power stage is off.

Possible Cause
NOTE: The causes shown may not be a complete list of all potential problems, and it is possible that there may be other causes.
VTC oil control solenoid valve A VTC line short to power
VTC oil control solenoid valve A VTC line short to ground
VTC oil control solenoid valve A VTC line open
PCM internal circuit failure

Confirmation Procedure
Operating Condition
1.
Start the engine. Hold the engine speed [Engine Speed] at 3,000 rpm without load (in neutral) until the radiator fan comes on.
2.
Let it idle for at least 1 second.
With the HDS
Select the VTC TEST in the INSPECTION MENU with the HDS, then select the IN-VTC.

Diagnosis Details
Conditions for setting the DTC
When a malfunction is detected, the MIL comes on and a Pending DTC, a Confirmed DTC, and the freeze data are stored in the PCM memory.

Conditions for clearing the DTC
The MIL is cleared if the malfunction does not return in three consecutive trips in which the diagnostic runs. The MIL, the Pending DTC, the Confirmed DTC, and the freeze data can be cleared with the scan tool Clear command.