VOLVO
ECM-1826 - Glow plug relay, position. Faulty signal
System
Engine Control Module (ECM)
Volvo models this fault code applies to
Applies to the following models:
2 modelsS40 (1996–2004), V40 (1996–2004)
Show models by year and engine (2)
What does this fault code mean?
The ECM monitors the signal that reports the position of the glow plug relay. If that signal is faulty, for example because of a fault in the signal wire, fault code ECM-1826 is set.
Possible causes
- Signal wire shorted to voltage
- Signal wire shorted to ground
- Open circuit in the signal wire
What you can do
- 1Switch off the ignition and check the glow plug relay connectors for play and oxidation
- 2With a multimeter, check that the signal wire to the glow plug relay is not shorted to voltage or ground and is not broken
- 3If you have a diagnostic tool: clear the fault code and see whether it returns after the engine has run for a while
- 4If the fault remains, have a workshop check the glow plug relay and its signal wire
Symptoms you may notice1
- No noticeable symptoms for the driver
General guidance for car owners. Diagnosis on the car can point to a different cause.