Faulty engine shutoff solenoid (open or shorted coil); Damaged wiring or connector at the solenoid; Corroded or loose ground connection for the solenoid circuit; Blown fuse or relay supplying power to the solenoid; ECM software glitch or internal driver failure (less common)

DTC codes / Volkswagen codes / P1537

P1537 · VolkswagenEngine Shutoff Solenoid Malfunction

Q: What does code P1537 mean?

Engine Shutoff Solenoid Malfunction. P1537 on Volkswagen vehicles indicates that the engine control module (ECM) has detected an electrical fault in the engine shutoff solenoid circuit, which is used to cut fuel or ignition when the engine is shut down. The ECM monitors the solenoid's resistance and current draw and sets this code when the signal is out of expected range, often due to a wiring issue or a failed solenoid.

P1537 on Volkswagen vehicles indicates that the engine control module (ECM) has detected an electrical fault in the engine shutoff solenoid circuit, which is used to cut fuel or ignition when the engine is shut down. The ECM monitors the solenoid's resistance and current draw and sets this code when the signal is out of expected range, often due to a wiring issue or a failed solenoid.

SystemPowertrain

Code typeVolkswagen specific

SeverityMedium

Fix difficultyIntermediate

AreaVehicle speed, idle control and auxiliary inputs

Symptoms you may notice

Illuminated check engine light, often with no other symptoms
Engine may not shut off immediately when the key is turned off, or may run on briefly
Difficulty restarting the engine after shutdown
Rough idle or stalling if the solenoid affects fuel delivery
In rare cases, the engine may crank but not start

Common causes, most likely first

Faulty engine shutoff solenoid (open or shorted coil)
Damaged wiring or connector at the solenoid
Corroded or loose ground connection for the solenoid circuit
Blown fuse or relay supplying power to the solenoid
ECM software glitch or internal driver failure (less common)

How to diagnose and fix it

Scan all modules for stored codes and verify P1537 is current
Inspect the solenoid connector and wiring for damage or corrosion
Test the solenoid resistance with a multimeter and compare to specification
Check for power and ground at the solenoid connector with the key on
Inspect and test the associated fuse and relay
If wiring and power are good, replace the solenoid
Clear codes and perform a road test to confirm the repair

Don't overlook the simple electrical checks

A loose or corroded ground for the solenoid can mimic a failed solenoid, so always check grounds before replacing parts.
The engine shutoff solenoid is often confused with the fuel shutoff solenoid on diesel engines, but on gasoline Volkswagens it is part of the ignition or fuel injection system.
Intermittent faults can be caused by a chafed wire that only shorts when the engine moves, so wiggle-test the harness while monitoring live data.
Some aftermarket alarms or remote starters tap into the shutoff circuit and can cause this code if not installed correctly.

Can I keep driving with P1537?

If the engine runs normally, you can drive cautiously to a repair shop, but avoid long trips or situations where the engine might not shut off properly. If the engine stalls or fails to restart, stop driving and seek professional help.

Tools that help

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