SFI SYSTEM, Diagnostic DTC:P0011, P0012, P0021, P0022

DTC Code	DTC Name
P0011	Camshaft Position "A" - Timing Over-Advanced or System Performance (Bank 1)
P0012	Camshaft Position "A" - Timing Over-Retarded (Bank 1)
P0021	Camshaft Position "A" - Timing Over-Advanced or System Performance (Bank 2)
P0022	Camshaft Position "A" - Timing Over-Retarded (Bank 2)

DESCRIPTION

Refer to DTC P0010 Click here.

DTC No.	DTC Detection Condition	Trouble Area
P0011 P0021	Intake valve timing is stuck at a certain value when in the advance range (1 trip detection logic).	Valve timing Camshaft timing oil control valve assembly (for intake camshaft of bank 1, 2) Oil control valve filter (RH, LH) Oil pipe Camshaft timing gear assembly (bank 1, 2) ECM
P0012 P0022	Intake valve timing is stuck at a certain value when in the retard range (2 trip detection logic).

DTC No.

DTC Detection Condition

Trouble Area

P0011

P0021

Intake valve timing is stuck at a certain value when in the advance range (1 trip detection logic).

Valve timing
Camshaft timing oil control valve assembly (for intake camshaft of bank 1, 2)
Oil control valve filter (RH, LH)
Oil pipe
Camshaft timing gear assembly (bank 1, 2)
ECM

P0012

P0022

Intake valve timing is stuck at a certain value when in the retard range (2 trip detection logic).

MONITOR DESCRIPTION

The ECM optimizes the intake valve timing using the Variable Valve Timing (VVT) system to control the intake camshaft. The VVT system includes the ECM, the camshaft timing oil control valve assembly (for intake camshaft) and the VVT controller (camshaft timing gear assembly). The ECM sends a target duty-cycle control signal to the camshaft timing oil control valve assembly (for intake camshaft). This control signal regulates the oil pressure supplied to the VVT controller. The VVT controller can advance or retard the intake camshaft.
If the difference between the target and actual intake valve timing is large, and changes in the actual intake valve timing are small, the ECM interprets this as a VVT controller stuck malfunction and stores a DTC.

Example:

A DTC is stored when the following conditions "A" and "B" are met (DTCs P0011 and P0021):

(a) It takes 5 seconds or more to change the valve timing by 5°CA (Condition "A").
(b) After the above condition "A" is met, the camshaft timing oil control valve assembly is forcibly activated 14 times or more (when the vehicle is idling, this takes approximately 100 seconds) (Condition "B").

A DTC is stored when the following conditions "A" and "B" are met (DTCs P0012 and P0022):

(a) It takes 5 seconds or more to change the valve timing by 5°CA (Condition "A").
(b) After the above condition "A" is met, the camshaft timing oil control valve assembly is forcibly activated 63 times or more (when the vehicle is idling, this takes approximately 100 seconds) (Condition "B").

DTCs P0011 and P0021 (Advanced Cam Timing) are subject to 1 trip detection logic.
DTCs P0012 and P0022 (Retarded Cam Timing) are subject to 2 trip detection logic.
These DTCs indicate that the VVT controller cannot operate properly due to a camshaft timing oil control valve assembly (for intake camshaft) malfunction or the presence of foreign objects in the camshaft timing oil control valve assembly (for intake camshaft).

MONITOR STRATEGY

Required Sensors/Components (Main)

Camshaft timing oil control valve assembly (for intake camshaft)

Camshaft timing gear assembly

Required Sensors/Components (Related)

Crankshaft position sensor

VVT sensor

Engine coolant temperature sensor

Frequency of Operation

Continuous

CONFIRMATION DRIVING PATTERN

Connect the GTS to the DLC3.
Turn the engine switch on (IG) and turn the GTS on.
Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).
Turn the engine switch off and wait for at least 30 seconds.
Turn the engine switch on (IG) and turn the GTS on [A].
Start the engine and warm it up until the engine coolant temperature reaches 75°C (167°F) or higher [B].
Drive the vehicle at approximately 60 km/h (37 mph) for 10 minutes or more [C].

CAUTION:

When performing the confirmation driving pattern, obey all speed limits and traffic laws.
Idle the engine for 3 minutes or more [D].
Enter the following menus: Powertrain / Engine / Trouble Codes [E].
Read the pending DTCs.
Tech Tips
- If a pending DTC is output, the system is malfunctioning.
- If a pending DTC is not output, perform the following procedure.
Enter the following menus: Powertrain / Engine / Utility / All Readiness.
Input the DTC: P0011, P0012, P0021 or P0022.

Check the DTC judgment result.

GTS Display	Description
NORMAL	DTC judgment completed System normal
ABNORMAL	DTC judgment completed System abnormal
INCOMPLETE	DTC judgment not completed Perform driving pattern after confirming DTC enabling conditions
N/A	Unable to perform DTC judgment Number of DTCs which do not fulfill DTC preconditions has reached ECU memory limit

Tech Tips

If the judgment result shows NORMAL, the system is normal.
If the judgment result shows ABNORMAL, the system has a malfunction.
If the judgment result shows INCOMPLETE or N/A, perform steps [F] through [H].

Repeat the pattern of accelerating the vehicle from rest to approximately 60 km/h (37 mph) and then decelerating the vehicle 10 to 15 times [F].

CAUTION:

When performing the confirmation driving pattern, obey all speed limits and traffic laws.

Tech Tips

Depress the accelerator pedal by a large amount.
Idle the engine for 3 minutes or more [G].
Enter the following menus: Powertrain / Engine / Trouble Codes [H].
Read the pending DTCs.
Tech Tips
- If a pending DTC is output, the system is malfunctioning.
- If a pending DTC is not output, perform the following procedure.
Check the DTC judgment result again.
Tech Tips
- If the judgment result shows NORMAL, the system is normal.
- If the judgment result shows ABNORMAL, the system has a malfunction.

WIRING DIAGRAM

Refer to DTC P0010 Click here.

CAUTION / NOTICE / HINT

Tech Tips

Abnormal Bank	Timing Over Advanced (Valve timing is out of specified range)	Timing Over Retarded (Valve timing is out of specified range)
Bank 1	P0011	P0012
Bank 2	P0021	P0022

Abnormal Bank

Timing Over Advanced

(Valve timing is out of specified range)

Timing Over Retarded

(Valve timing is out of specified range)

Bank 1

P0011

P0012

Bank 2

P0021

P0022

If DTC P0011 or P0012 is output, check the VVT system (for intake camshaft of bank 1) circuit.
If DTC P0021 or P0022 is output, check the VVT system (for intake camshaft of bank 2) circuit.
Bank 1 refers to the bank that includes the No. 1 cylinder*.

*: The No. 1 cylinder is the cylinder which is farthest from the transaxle.
Bank 2 refers to the bank that does not include the No. 1 cylinder.
DTC P0011, P0012, P0021 or P0022 may be stored when foreign objects in the engine oil are caught in some parts of the system. The DTC will remain stored even if the system returns to normal after a short time. Those foreign objects may then be captured by the oil filter.
Read freeze frame data using the GTS. The ECM records vehicle and driving condition information as freeze frame data the moment a DTC is stored. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air fuel ratio was lean or rich, and other data from the time the malfunction occurred.

PROCEDURE

CHECK ANY OTHER DTCS OUTPUT (IN ADDITION TO DTC P0011, P0012, P0021 OR P0022)

Connect the GTS to the DLC3.
Turn the engine switch on (IG).
Turn the GTS on.
Enter the following menus: Powertrain / Engine / Trouble Codes.

Read the DTCs.

Result
Result	Proceed to
DTC P0011, P0012, P0021 or P0022 is output	A
DTC P0011, P0012, P0021 or P0022 and other DTCs are output	B

Tech Tips

If any DTCs other than P0011, P0012, P0021 or P0022 are output, troubleshoot those DTCs first.

GO TO DTC CHART Click here

PERFORM ACTIVE TEST USING GTS (CONTROL THE VVT LINEAR)

Connect the GTS to the DLC3.
Start the engine.
Turn the GTS on.
Turn the A/C switch on.
Enter the following menus: Powertrain / Engine / Active Test / Control the VVT Linear (Bank 1) or Control the VVT Linear (Bank 2).

Check the engine speed while operating the camshaft timing oil control valve assembly (for intake camshaft) using the GTS.

OK
GTS Operation	Engine Condition
0%	Normal engine speed
100%	Engine idles roughly or stalls

Tech Tips

Refer to "Data List / Active Test" [VVT OCV Duty #1, VVT Change Angle #1, VVT OCV Duty #2 and VVT Change Angle #2] Click here.

CHECK VALVE TIMING (CHECK FOR LOOSE TIMING CHAIN AND JUMPED TEETH) Click here

CHECK WHETHER DTC OUTPUT RECURS (DTC P0011, P0012, P0021 OR P0022)

Connect the GTS to the DLC3.
Turn the engine switch on (IG).
Turn the GTS on.
Clear the DTCs Click here.
Turn the engine switch off and wait for at least 30 seconds.
Turn the engine switch on (IG).
Turn the GTS on.
Start the engine and warm it up.
Drive the vehicle in accordance with the driving pattern described in the Confirmation Driving Pattern.
Enter the following menus: Powertrain / Engine / Trouble Codes / Pending.

Read the pending DTCs.

Result
Result	Proceed to
DTC is not output	A
DTC P0011, P0012, P0021 or P0022 is output	B

Tech Tips

DTC P0011, P0012, P0021 or P0022 may be stored when foreign objects in the engine oil are caught in some parts of the system. The DTC will remain stored even if the system returns to normal after a short time. Those foreign objects may then be captured by the oil filter.

CHECK FOR INTERMITTENT PROBLEMS Click here

CHECK VALVE TIMING (CHECK FOR LOOSE TIMING CHAIN AND JUMPED TEETH)

Remove the cylinder head cover sub-assemblies RH and LH Click here.
Turn the crankshaft pulley, and align its groove with the "0" timing mark of the timing chain cover.

Check that the timing marks of the camshaft timing gear assemblies and camshaft timing exhaust gear assemblies are aligned with the timing marks of the bearing cap as shown in the illustration.

Tech Tips

If the timing marks are not as shown, turn the crankshaft one revolution clockwise.

OK
The timing marks on the camshaft timing gear assemblies and camshaft timing exhaust gear assemblies are aligned as shown in the illustration.

Text in Illustration
*1	Timing Mark

ADJUST VALVE TIMING Click here

INSPECT CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY (FOR INTAKE CAMSHAFT)
1. Inspect the camshaft timing oil control valve assembly (for intake camshaft) Click here.
NG
REPLACE CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY (FOR INTAKE CAMSHAFT) Click here

OK

INSPECT OIL CONTROL VALVE FILTER AND OIL PIPE

Text in Illustration
*1	Bank 1
*2	Bank 2
*a	Oil Pipe
*b	No. 1 Oil Pipe

Remove the oil pipe or No. 1 oil pipe Click here.

Remove the oil control valve filter RH or oil control valve filter LH.
Check that the oil control valve filter and oil pipe are not clogged.

OK

The oil control valve filter or oil pipe is not clogged.

OK
The oil control valve filter or oil pipe is not clogged.

REPLACE OIL CONTROL VALVE FILTER OR OIL PIPE Click here

REPLACE CAMSHAFT TIMING GEAR ASSEMBLY
1. Replace the camshaft timing gear assembly (bank 1 or bank 2) Click here.
  
  Tech Tips
  
  Perform "Inspection After Repair" after replacing the camshaft timing gear assembly Click here.
NEXT

CHECK WHETHER DTC OUTPUT RECURS (DTC P0011, P0012, P0021 OR P0022)

Connect the GTS to the DLC3.
Turn the engine switch on (IG).
Turn the GTS on.
Clear the DTCs Click here.
Turn the engine switch off and wait for at least 30 seconds.
Turn the engine switch on (IG).
Turn the GTS on.
Start the engine and warm it up.
Drive the vehicle in accordance with the driving pattern described in the Confirmation Driving Pattern.
Enter the following menus: Powertrain / Engine / Trouble Codes / Pending.

Read the pending DTCs.

Result
Result	Proceed to
DTC is not output	A
DTC P0011, P0012, P0021 or P0022 is output	B

END

REPLACE ECM Click here