OBD-II code · Powertrain (generic, extended)
P2642 Torque Management Feedback Signal B Range/Performance
The torque feedback signal B is present but its value is implausible against measured engine load and speed. Sender calibration or sensor offset is suspected.
Is it safe to drive with P2642?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- PossibleSender calibration drift
- PossibleBus value corrupted by EMI
- Less likelySensor element aged beyond calibration window
Repair at a glance
- Difficulty
- Medium
- DIY friendly
- Best left to a mechanic
- Typical labour
- 1–4 h
- Emissions test
- Usually unaffected
- Parts involved
- Secondary Torque User, Torque Sensor
Related codes
- P2638Torque Management Feedback Signal A Range/Performance
- P263FGlow Plug Control Module 2 Over Temperature
- P2640Torque Management Feedback Signal A High
- P2641Torque Management Feedback Signal B
- P2643Torque Management Feedback Signal B Low
- P2644Torque Management Feedback Signal B High
- P2645A Rocker Arm Actuator Control Circuit / Open Bank 1
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.