Intake Manifold Temperature (IMT) Sensor Circuit Low Voltage
The intake manifold temperature sensor is reporting a low voltage issue.
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 intake manifold temperature sensor is supposed to read certain temperatures; when it's low, it means there's a problem likely with the sensor or its wiring, causing incorrect temp readings.
What the computer is actually seeing
The engine's control unit is seeing a voltage below 0.1 volts from the intake manifold temperature sensor when it should be between 0.5 to 4.5 volts under normal conditions.
What a healthy reading looks like
Normal voltage from the IMT sensor should range from 0.5 to 4.5 volts based on intake temperatures of -40°F to 257°F (-40°C to 125°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.
- 11. Inspect the wiring and connectors for damage, corrosion, or loose connections on the IMT sensor.
- 22. Measure the voltage at the sensor connector with the engine running; it should be between 0.5 and 4.5 volts.
- 33. If voltage is low or absent, check the wiring continuity back to the ECM; repair any breaks or shorts found.
- 44. If wiring is good and voltage is still low, replace the intake manifold temperature sensor and retest.
- 55. Clear the fault codes and monitor for reoccurrence.
Common causes
- Faulty intake manifold temperature sensor
- Wiring issue or broken connector
- Open or shorted circuit in the sensor harness
- Faulty ECM (Engine Control Module)
Typical repair cost
$$
Related codes
Frequently asked questions
Is it safe to drive with this code?
It's drivable but not recommended for long distances as it can affect engine performance and emissions.
Will the code come back after resetting it?
If the underlying issue isn't fixed, yes, the code will return.
Why does this code pair with other SPNs?
It may indicate broader issues with engine temperature management or sensor network disruptions.
Working a real vehicle right now?
Let DiagCoach walk you through it live with your specific symptoms, vehicle, and what you've already checked.
Start guided diagnostic →