Data Link Message - Engine Temperature
Engine temperature message from ECU is implausible or missing.
Heads up: this code wasn't in our hand-written library yet, so DiagCoach AI built this page on the fly. Double-check critical specs against service info before condemning parts.
What it means (plain English)
The engine control unit is sending either a nonsense or no information about the engine's temperature, which could lead to overheating or poor performance if not checked.
What the computer is actually seeing
The computer expects a temperature reading that falls within a specific range. If it sees a reading that is out of bounds or receives no information, it triggers this fault code.
What a healthy reading looks like
Typical engine temperature should be between 180°F and 220°F (82°C and 104°C).
Guided diagnostic — the DiagCoach way
Don't just throw parts at it. Walk through these in order — each step tells you whether to keep going or stop and fix what you found.
- 1Check engine coolant level; low coolant can affect readings.
- 2Inspect wiring and connectors for damage; ensure a tight fit.
- 3Using a scan tool, check the engine temperature reading in real time. Compare with actual temperature using a laser thermometer.
- 4If the temperature reading is implausible, replace the engine temperature sensor and retest.
- 5If the issue persists, check for faults in the ECU or reprogram if necessary.
Common causes
- Faulty engine temperature sensor
- Wiring issues or damaged connectors
- ECU software glitches
- Intermittent sensor signal loss
Typical repair cost
$$
Related codes
Frequently asked questions
Is it safe to drive with this code?
Moderate severity means it's better to fix this soon, but you might still be able to drive it short distances.
Will this code come back after clearing it?
If the underlying issue isn't fixed, yes; it's likely to return.
Why is this code paired with other SPNs?
Related SPNs often share similar symptoms or root causes, indicating an issue with the engine monitoring system.
Working a real vehicle right now?
Let DiagCoach walk you through it live with your specific symptoms, vehicle, and what you've already checked.
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