VOLVO
ECM-8100 - Starter relay 1. Open circuit
System
Engine Control Module (ECM)
Volvo models this fault code applies to
Applies to the following models:
3 modelsC30 (2007–2013), S40 (2004–2013), V50 (2004–2013)
What does this fault code mean?
Starter motor relay 1, which supplies voltage to the starter motor, has an open circuit, or its connections are open. The fault may be a damaged relay or broken connections, and the starter motor then does not turn. The automatic engine start and stop function is switched off.
Possible causes
- Open circuit in the connections
- Damaged starter motor relay 1
What you can do
- 1Check that the fuses are intact
- 2Check the battery connections and the wiring to the starter motor for loose connectors and corrosion
- 3On a start attempt: do you hear a clicking sound, and does the starter motor turn or not?
- 4If you have a diagnostic tool: activate starter motor relay 1 and listen for it to click
- 5If the fault remains, have a workshop check starter motor relay 1 and its connections
Symptoms you may notice3
- The starter motor does not turn over
- A clicking sound is heard at start attempts
- Automatic engine start and stop does not work
What the fault can affect1
- The automatic engine start and stop function is switched off
General guidance for car owners. Diagnosis on the car can point to a different cause.