P0639high severityPowertrain
Throttle Actuator Control Range/Performance (Bank 2)
on 2015 Chevrolet Silverado 1500 5.3L V8 EcoTec3 L83 · RWD
What this code means
The PCM detected the bank 2 throttle actuator is out of the expected operating range. This may cause reduced power and limp mode on engines with dual throttle bodies.
Symptoms
- Reduced engine power
- Check engine light on
- Poor throttle response
Common causes
- Faulty bank 2 throttle body/actuator
- Dirty throttle plate
- Damaged throttle control wiring
- Faulty PCM
Diagnostic steps
- Scan throttle position data for bank 2
- Inspect and clean throttle body
- Test throttle actuator and wiring
- Perform relearn or replace throttle body
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Other Powertrain codes on this vehicle
P0001
Fuel Volume Regulator Control Circuit/Open
P0002
Fuel Volume Regulator Control Circuit Range/Performance
P0003
Fuel Volume Regulator Control Circuit Low
P0004
Fuel Volume Regulator Control Circuit High
P0005
Fuel Shutoff Valve A Control Circuit/Open
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
P0010
Intake Camshaft Position Actuator Circuit/Open Bank 1