Question 1

What does P0127 mean?

Accepted Answer

P0127 - Intake Air Temperature Too High. The intake air temperature is higher than expected, which can cause detonation.

Question 2

What are the symptoms of P0127?

Accepted Answer

Check engine light, Reduced power, Possible detonation, Timing retarded

Question 3

What causes P0127?

Accepted Answer

Heat soak from engine bay, Intercooler failure (turbo), IAT sensor issue, Air intake routing near heat sources

Question 4

How much does it cost to fix P0127?

Accepted Answer

Typical repair cost: $20-$500. On turbocharged vehicles, check the intercooler. On naturally aspirated vehicles, ensure the air intake isn't routing near exhaust components.

P0127 — Intake Air Temperature Too High

Don't guess — diagnose P0127 the right way

Common symptoms of P0127

Common causes of P0127

Repair cost & difficulty

Vehicles commonly affected

Related trouble codes