What does it mean?
P1438 is a Powertrain fault code. It indicates: A/C Evaporator Air Temperature Circuit Range/Performance.
A/C Evaporator Air Temperature Circuit Range/Performance
Severity
Low
Can I keep driving?
Usually drivable; have it fixed at the first opportunity.
How is this code read?
This is a standard OBD-II code; any basic scanner reads it on vehicles built after 2004.
- PPowertrain
- 1Manufacturer-specific
- 4Powertrain (Other)
- 38Sequence number
Codes From the Same System
All Fault Codes- P0E00Generator Phase U Current Sensor Circuit
- P0E01Generator Phase U Current Sensor Circuit Range/Performance
- P0E02Generator Phase U Current Sensor Circuit Low
- P0E03Generator Phase U Current Sensor Circuit High
- P0E04Generator Phase V Current Sensor Circuit
- P0E05Generator Phase V Current Sensor Circuit Range/Performance
- P0E06Generator Phase V Current Sensor Circuit Low
- P0E07Generator Phase V Current Sensor Circuit High
Related Similar Codes
- P1430Electric Air Pump Secondary Failure
- P1431Misfire Monitor Disabled Unable to Learn Trigger Wheel Profile
- P1432Secondary Air Injection System Incorrect Flow Detected
- P1433A/C Refrigerant Temperature Circuit Low
- P1434A/C Refrigerant Temperature Circuit High
- P1435A/C Refrigerant Temperature Circuit Range/Performance
- P1436A/C Evaporator Air Temperature Circuit Low
- P1437A/C Evaporator Air Temperature Circuit High
This information follows the generic OBD-II definition and does not replace a vehicle-specific diagnosis. The severity rating is rule-based; an authorised diagnostic reading is required for a definitive answer.