P0025 “B” Camshaft Position – Timing Over-Retarded (Bank 2)
OBD-II DTC Trouble Code Description
“B” Camshaft Position – Timing Over-Retarded (Bank 2)
What does that mean?
This diagnostic trouble code (DTC) is a generic powertrain code, which means that it applies to OBD-II equipped vehicles, including but not limited to Toyota, VW, Ford, Dodge, Honda, Chevrolet, Hyundai, Audi, Acura, etc.
A P0025 code refers 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 a technology used in the engine to allow it to get greater power or efficiency at different running points.
In this case, if the cam timing is over-retarded, the engine light will be illluminated and the code will be set. The "B" camshaft is either the exhaust, right, or rear camshaft. Bank 2 is the side of the engine that does not contain cylinder #1. This code is nearly identical to P0022.
Potential Symptoms
Most likely a P0025 DTC will result in one of the following:
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.
Causes
A P0025 DTC trouble code may be caused by one or more of the following:
Possible Solutions
The main thing to check is to verify the operation of the VCT solenoid. You’re looking for a sticking or stuck VCT solenoid valve caused by contamination. Refer to vehicle specific repair manual to perform component tests for the VCT unit. Notes: Dealer techs 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
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"Delete Error Code Permanently, Disable DTC Error Code Function for p0025 in the ECU"
In extreme cases, we even have the option to permanently remove the specific DTC p0025 and disable the function of the specific error code in the ECU. All other fault code functions will then continue to work to protect the engine. This is different from clearing an error code with a diagnostic device. We have the option to permanently remove the function of the specific error code, so that it never comes back. Also emergency running that occurs on the specific error code can be solved in most cases.
Of course we prefer to first try to solve the cause of the error code, but sometimes the only solution is to permanently disable the DTC function of p0025.
