2002 Infinity QX4 service engine light code

Tiny
KARENLUNKA
  • MEMBER
  • 2002 INFINITI INFINITY QX4
  • 6 CYL
  • 4WD
  • AUTOMATIC
  • 136,790 MILES
My service engine light came on approx. 100 miles ago.
The code was P0021 stating the the Timing Crankshaft Position Over Advanced. What exactly is this telling me?
Is it okay to drive the vehicle in this condition? Is this an item that is expensive to correct? Please Advise. Thanks
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Thursday, May 27th, 2010 AT 6:06 PM

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Tiny
RASMATAZ
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P0021 "A" Camshaft Position - Timing Over-Advanced or System Performance (Bank 2)

What does that mean?A code P0021 refers to the VVT (variable valve timing) or VCT (variable camshaft timing) components and the car's PCM (powertrain control module, also called an ECM). That consists of a few different components but the P0021 DTC specifically refers to the camshaft (cam) timing. In this case, if the cam timing is above a set limit (over-advanced), the engine light will be illluminated and the code will be set. The "A" camshaft is either the intake, left, or front camshaft. A P0021 engine code is basically the same as a P0011 code, except this is for Bank 2, not Bank 1.

OBD-Codes. Com on FacebookPotential SymptomsMost likely a P0021 DTC will result in one of the following: hard starting, poor idle, and/or stalling. There are potentially other symptoms as well. Of course, when trouble codes are set, the MIL (malfunction indicator lamp, a.K.A. The check engine light) illuminates.

CausesA P0021 DTC trouble code may be caused by one or more of the following:

Incorrect camshaft timing
Wiring problems (harness/wiring) in intake timing control valve control solenoid system
Continuous oil flow to VCT piston chamber
Failed timing valve control solenoid (stuck open)
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Thursday, May 27th, 2010 AT 6:34 PM

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