P0655 Code: Engine Hot Lamp Output Control Circuit
🟢 Low severity · drivable
The car drives normally, but the engine hot warning lamp may not work.
What P0655 means
The engine computer controls an ENGINE HOT warning lamp on the dash. This code means the circuit that drives that lamp isn't working, so you might not get a warning if the engine overheats.
Symptoms
- Check engine light is on
- Engine hot lamp doesn't light
- Engine hot lamp stays on
- No other drivability issues
Common causes
- most common: Burnt out warning lamp bulb
- common: Damaged wiring in the lamp circuit
- common: Loose or corroded connector
- less common: Faulty engine computer
How to fix it
| Fix | DIY? | Typical cost |
|---|---|---|
| Check and replace the warning lamp bulb | Yes | $5–20 |
| Repair the lamp circuit wiring and connector | Mechanic | $50–200 |
| Test the computer's lamp output | Mechanic | $50–150 |
Frequently asked questions
Can I drive with a P0655 code?
Yes. Just know the engine hot lamp may not light, so watch the temperature gauge.
What is the engine hot lamp?
It's a dash warning light that tells you the engine is overheating. This code means its circuit is broken.
How much does it cost to fix a P0655?
A bulb is a few dollars; wiring repairs run $50–200.
Related codes
P0654
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Updated 2026-08. This page is informational and not a substitute for professional diagnosis.