P0540low severityPowertrain
Intake Air Heater Circuit
on 2023 Chevrolet Bolt EUV 65 kWh Single Motor FWD · FWD
What this code means
The PCM detects a fault in the intake air heater circuit. This heater warms incoming air to help cold starting, common on diesels.
Symptoms
- Hard cold starts
- Rough running when cold
- Check engine light on
Common causes
- Faulty intake air heater
- Wiring or connector faults
- Blown fuse or relay
- Faulty control module
Diagnostic steps
- Retrieve trouble codes
- Inspect heater wiring and relay
- Test heater element resistance
- Check for power at heater
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Other Powertrain codes on this vehicle
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
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