Engine Error
P0127
Intake Air Temperature Too High
Severity
Medium
Symptoms
Engine knocking/pinging, reduced power, check engine light
Common Causes
- Hot air drawn from engine bay (missing intake tube)
- Failed intercooler (on turbocharged engines)
- Faulty IAT sensor reading falsely high
- Engine overheating
How to Fix
- 1 Restore factory cold air intake path
- 2 Inspect and clean intercooler
- 3 Replace IAT sensor
- 4 Diagnose main engine cooling system
Estimated Repair Cost
USD
$50
–
$600
IAT sensor: 50; Intercooler repair/replace: 300 - 600