Powertrain
generic / SAE
P2B30
Fan 1 Stuck On
Cooling fan 1 stays in the activated state when commanded off. The relay or control driver is welded or stuck on.
SystemPowertrain
Typegeneric / SAE
GroupP2
Range / numberB / 30
Possible causes
- Fan relay contacts welded closed high
- Output driver stuck on medium
- Carbon or debris buildup preventing free movement low
Inspection / repair
- Difficulty: medium
- DIY: shop recommended
- Estimated cost: 100–700 €
- Estimated time: 0.5–3 h
- Component: cooling fan 1
- Component: fan relay 1
- Component: ecm
- MIL / check engine light
- limp mode possible
Sources
References
sae:J2012