Powertrain
Definition only
Lights the check engine lamp
P2640: Torque Management Feedback Signal A High
Standardized SAE J2012 code · P26xx — Computer and output circuits
What does P2640 mean?
The torque feedback signal A reads above its valid range. Source module sends an implausibly high value or the bus signal is stuck high.
The code tells you which monitor failed, not which part is broken. Test before replacing parts.
Common causes
- High Source module sends invalid high value
- Medium Signal stuck high on the bus
Likelihood is a general estimate across vehicles; your make and model may differ.
Add your car to see reports of P2640 on the same make and model first.
P2640 in the community
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