P2637moderate severityPowertrain
Torque Management Feedback Signal 'A'
on 2023 Chevrolet Bolt EUV 65 kWh Single Motor FWD · FWD
What this code means
The engine control module detected a problem with the torque management feedback signal used to coordinate engine and transmission torque. This can affect smooth power delivery and shifting.
Symptoms
- Reduced engine power
- Harsh or erratic shifting
- Illuminated check engine light
Common causes
- Faulty powertrain control module
- Wiring or connector fault in torque feedback circuit
- Failed transmission control module
- Poor ground or reference voltage
Diagnostic steps
- Scan for related PCM and TCM codes
- Inspect torque signal circuit wiring and connectors
- Check reference voltage and grounds
- Test or replace faulty control module
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Other Powertrain codes on this vehicle
P0005
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P0006
Fuel Shutoff Valve A Control Circuit Low
P0007
Fuel Shutoff Valve A Control Circuit High
P0008
Engine Position System Performance - Bank 1
P0009
Engine Position System Performance - Bank 2
P0026
Intake Valve Control Solenoid Circuit Range/Performance Bank 1
P0027
Exhaust Valve Control Solenoid Circuit Range/Performance Bank 1
P0028
Intake Valve Control Solenoid Circuit Range/Performance Bank 2
P0029
Exhaust Valve Control Solenoid Circuit Range/Performance Bank 2
P0033
Turbocharger/Supercharger Bypass Valve Control Circuit