Powertrain
generic / SAE
P26F2
Starter Relay B Stuck On
The second starter relay stays closed when commanded off. Starter motor B remains engaged after the engine is running, which can destroy the starter pinion or ring gear.
SystemPowertrain
Typegeneric / SAE
GroupP2
Range / number6 / F2
Possible causes
- Relay contacts welded shut by inrush current high
- ECU output driver stuck on medium
- Carbon or debris buildup preventing free movement low
Inspection / repair
- Difficulty: easy
- DIY: possible
- Estimated cost: 50–400 €
- Estimated time: 0.3–2 h
- Component: starter relay b
- Component: starter motor b
- MIL / check engine light
Sources
References
sae:J2012