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2002 Jaguar X-Type V6 P1638 code means? can you help me?

Vehicle: 2002 Jaguar X-Type V6

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Unfortunately, I don't have much information. The P1638 code means that the Instrument Cluster (IC) is not responding to the Powertrain Control Module (PCM) communication.

The P1797 is also related to the PCM communication, but with the Transmission Control Module (TCM), The P1000 means that PCM didn't complete a full diagnosis cycle, and is set when the battery has been disconnected, codes have been cleared, or sometimes even when the vehicle has been towed.

I recommend starting by checking the battery charge and charging system. Low battery charge can cause poor communication between control modules.

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