What does code P1237 mean?

Q: What does code P1237 mean?

VSV 2 Circuit. P1237 on a Jaguar indicates that the engine control module (ECM) has detected an electrical fault in the circuit for Vacuum Switching Valve 2 (VSV 2), which is a solenoid used to control vacuum flow to various engine systems. The ECM monitors the VSV 2 circuit for expected voltage or current and sets this code when the signal is out of range, typically indicating an open, short, or excessive resistance in the wiring or the solenoid itself.

DTC codes / Jaguar codes / P1237

P1237 · JaguarVSV 2 Circuit

P1237 on a Jaguar indicates that the engine control module (ECM) has detected an electrical fault in the circuit for Vacuum Switching Valve 2 (VSV 2), which is a solenoid used to control vacuum flow to various engine systems. The ECM monitors the VSV 2 circuit for expected voltage or current and sets this code when the signal is out of range, typically indicating an open, short, or excessive resistance in the wiring or the solenoid itself.

SystemPowertrain

Code typeJaguar specific

SeverityMedium

Fix difficultyIntermediate

AreaFuel and air metering (injector circuits)

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