Powertrain
generic / SAE
P2531
Ignition Switch Run Position Circuit Low
The ignition switch Run-position input reads stuck low — short to ground or a permanently closed contact. The ECM cannot tell when the operator releases the switch from Run, so accessory and crank logic gets confused.
SystemPowertrain
Typegeneric / SAE
GroupP2
Range / number5 / 31
Possible causes
- Run input wire shorted to ground high
- Switch contact stuck closed medium
- Connector pins corroded - high contact resistance low
Inspection / repair
- Difficulty: medium
- DIY: shop recommended
- Estimated cost: 80–500 €
- Estimated time: 0.5–2 h
- Component: ignition switch
- Component: wiring harness
- MIL / check engine light
Sources
References
sae:J2012