Hi recently the check engine soon light turned on in my Quest. I went to mechanic and on the computer came up the code P0021. Anyone had the same code and what to do? Thanks
Here’s the technical service bulletin for P0021:
APPLIED VEHICLES: All 1996 – 2009 with Variable Valve Timing
APPLIED ENGINES: VQ35; QR25; QG18; GA16; VQ40; VK56; MR18; MR20
IF YOU CONFIRM
The MIL is on with any of the following DTCs stored:
• P0011, P0014, P0021, P0024, P1110, P1135,
NOTE: The engine may also have Camshaft Sprocket rattle noise and/or other
Do Not replace the variable valve timing Solenoid Valve or the Sprocket(s) without
performing the complete diagnostics indicated in the EC section of the Service Manual.
The first steps in the complete diagnostic are to make sure the:
• Engine oil is at the operating level; add oil if needed. Refer to the Service Manual
for low oil level diagnoses if needed.
• Oil pressure is normal when measured with a gauge at the pressure switch port.
Refer to the Service Manual for low oil pressure diagnoses if needed.
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