What does code P1637 mean?

Q: What does code P1637 mean?

CAN Link ECM ABS Control Module Circuit Network. P1637 on a Jaguar indicates that the engine control module (ECM) cannot communicate with the anti-lock braking system (ABS) control module over the controller area network (CAN) bus. The ECM sets this code when it detects a loss of the CAN link or an invalid message from the ABS module, often due to a wiring fault, module failure, or power/ground issue.

DTC codes / Jaguar codes / P1637

P1637 · JaguarCAN Link ECM ABS Control Module Circuit Network

P1637 on a Jaguar indicates that the engine control module (ECM) cannot communicate with the anti-lock braking system (ABS) control module over the controller area network (CAN) bus. The ECM sets this code when it detects a loss of the CAN link or an invalid message from the ABS module, often due to a wiring fault, module failure, or power/ground issue.

SystemPowertrain

Code typeJaguar specific

SeverityMedium

Fix difficultyProfessional

AreaComputer and output circuits

Guidance is general and written for Jaguar vehicles. Exact tests and values vary by model, so confirm the fault before replacing parts.