Powertrain
generic / SAE
P2551
Torque Management Request Input Signal B High
Torque management input B reads stuck high — short to reference voltage or message at maximum. ECM rejects the request to avoid unintended high-torque commands.
SystemPowertrain
Typegeneric / SAE
GroupP2
Range / number5 / 51
Possible causes
- Signal wire shorted to reference voltage high
Inspection / repair
- Difficulty: hard
- DIY: shop recommended
- Estimated cost: 120–800 €
- Estimated time: 0.5–3 h
- Component: torque management input b
- MIL / check engine light
Sources
References
sae:J2012