U3894 Jaguar Xf OBD Code

OBD/2 U3894 error code description and symptoms.

Fuel Rail Pressure Sensor in Range But Low The comprehensive component monitor (CCM) monitors the FRP pressure for acceptable fuel pressure. The test fails when the fuel pressure falls below a calibrated value. Low fuel pressure Damaged FRP sensor Excessive resistance in circuit Low or no fuel A FRP PID value below 551 kpa (80 psi) indicates a failure Low or no fuel A FRP PID value greater than 896 kpa (130 psi) indicates a failure.

As long as the throttle plate remains closed, the idling speed and quality is controlled by the PCM via the idle control valve, and as can be seen from the above it should be clear that idle control on a gasoline engine is a complex affair. For instance, if the engine is started in sub-zero temperatures, the PCM will command the idling control valve to allow less air to enter the engine to enrich the air/fuel mixture to create a condition which is roughly analogous to how chokes worked on carburetted engines to control idling in cold weather.

U3894 Jaguar Xf Error Code Repair Process :

If your transmission transfer case differential lock-up feedback switch circuit failure check engine light is illuminated, it's best to take it in for diagnostic testing, which can feel like a hassle. Because while the lights vary in appearance from vehicle to vehicle, all have the same basic meaning: There's a problem with the car's emissions system. The on-board diagnostics system U3894 and engine control unit are in charge of monitoring a bunch of different transmission transfer case differential lock-up feedback switch circuit failure, and if they get a reading that's a little out of whack, up pops the check engine light.

Common Causes of Jaguar Xf U3894 OBD2 Code

A common cause of code U3894 is the failure of Transmission Transfer Case Differential Lock-Up Feedback Switch Circuit Failure, but there are several other possible causes as well, such as ;

Erratic camshaft position due to low oil pressure
Continuous oil flow to the VCT piston chamber
Faulty variable valve timing (VVT)
Open or short in the CMP sensor circuits

U3894 is a kind of Network Trouble Code

U-code indicates that engine communication errors and shows lost communication with engine parts.U-Codes are fairly straight forward, given all of the articles and technical publications that have been written regarding these problematic codes. In most cases, it just comes down to identifying the module that isn't communicating with the other modules on the CAN bus line for whatever reason.

Engine OBD 2 Codes website is a freeware resource center for engine trouble codes.

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U3894 Jaguar Xf OBD Code

U3894 Jaguar Xf Error Code Repair Process :

Common Causes of Jaguar Xf U3894 OBD2 Code

U3894 code for other Jaguar cars