Home » OBD Codes » P0025 “B” Camshaft Position – Timing Over-Retarded (Bank 2)

P0025 “B” Camshaft Position – Timing Over-Retarded (Bank 2)

Description of OBD-II DTC Trouble Code

The camshaft position – timing is excessively retarded on Bank 2.

What is the meaning of this?

This diagnostic trouble code (DTC) is a generic powertrain code that applies to OBD-II equipped vehicles, such as Toyota, VW, Ford, Dodge, Honda, Chevrolet, Hyundai, Audi, Acura, etc.

A P0025 code pertains to the VVT (variable valve timing) or VCT (variable camshaft timing) components and the car’s PCM (powertrain control module) or ECM (engine control module). VVT is an engine technology that allows for improved power or efficiency at different running points.

In this case, if the cam timing is excessively retarded, the engine light will illuminate and the code will be set. The “B” camshaft refers to the exhaust, right, or rear camshaft. Bank 2 is the side of the engine that does not contain cylinder #1. This code is almost identical to P0022.

Possible Symptoms

Most likely, a P0025 DTC will result in one of the following:

difficult starting

poor idle and/or

stalling

There may be other potential symptoms as well. When trouble codes are set, the MIL (malfunction indicator lamp), also known as the check engine light, will illuminate.

Possible Causes

A P0025 DTC trouble code may be caused by one or more of the following:

Incorrect camshaft timing

Wiring problems (harness/wiring) in the intake timing control valve control solenoid system

Continuous oil flow to VCT piston chamber

Failed timing valve control solenoid (stuck open)

Possible Solutions

The main thing to check is the operation of the VCT solenoid. Look for a sticking or stuck VCT solenoid valve caused by contamination. Refer to the vehicle-specific repair manual to perform component tests for the VCT unit. Notes: Dealer technicians have advanced tools and the ability to follow detailed troubleshooting steps, including the ability to test components using a scan tool.

Other related DTCs: P0010 – P0011 – P0012 – P0020 – P0021

Professional Service

While we always recommend resolving this issue mechanically, if for some reason that is not possible, we offer the option to permanently delete this specific DTC. We will continue to address all other codes. If you are interested in this option, please upload your ECU file to our portal.

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