Toyota Crown: 4GR-FSE VVT-i OCV Screen Blockage P0011

The 4GR-FSE 2.5L V6 oil control valves that regulate VVT-i camshaft phasing have fine mesh filter screens pressed into their inlet ports to protect solenoid internals. When oil changes are overdue or incorrect viscosity oil is used, engine sludge accumulates on these screens and starves the oil control valve of feed pressure. The camshaft phaser cannot advance on demand, and the ECU stores P0011 for intake cam timing over-retarded on bank 1. The oil control valve solenoid itself may also fail electrically. Symptoms worsen at idle and low RPM and can progress to cam phaser rattle if ignored.

• P0011 DTC stored (camshaft position timing over-retarded bank 1)
• Rough idle especially when warm
• Hesitation and stumble on cold start
• Reduced power and degraded fuel economy
• Check engine light with occasional cam phaser rattle at startup

1. 1

   Remove oil control valve from cylinder head and inspect inlet filter screen for sludge blockage by holding to light.

2. 2

   Check oil condition on dipstick for dark colour or sludge.

3. 3

   Confirm oil change records show correct interval and viscosity grade.

4. 4

   If a workshop inspection is possible: Verify OCV solenoid resistance with a multimeter against specification.

$180 to $900 at New Zealand independent workshop rates. That is for this job on its own, not for the car.

An estimate, in NZD, for the repair as normally carried out. What a specific car costs depends on which part has failed and what it damaged on the way — treat this as the floor for a negotiation, not a quote.

• “What oil change interval has been followed and by which workshop?”
• “What viscosity and brand of engine oil has been used throughout ownership?”
• “Any P0011 or camshaft timing codes in the diagnostic or service history?”

The failure described above is documented in published sources — owner forums, technical service bulletins, recall notices and workshop write-ups — held in our fault database. The inspection instructions and the cost estimate are KickTyres’ own interpretation of them, and it is a starting point for an inspection rather than a manufacturer statement.