Sensor Pressure - Engine Intake Manifold (IMAP)
The engine control unit has detected an issue with the intake manifold absolute pressure sensor.
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What it means (plain English)
The engine is not getting the correct pressure reading from the intake manifold pressure sensor, which helps manage engine performance and efficiency.
What the computer is actually seeing
The engine control unit (ECU) expects a certain voltage from the intake manifold absolute pressure (MAP) sensor under different engine conditions. A normal reading would be between 0.5 V to 4.5 V depending on load and altitude. If the signal falls outside this range, the ECU triggers a fault code.
What a healthy reading looks like
0.5V to 4.5V at the MAP sensor depending on engine load and conditions.
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.
- 1Inspect the wiring and connectors to the MAP sensor for damage or corrosion. Repair any found issues. Decision point: Is wiring and connector okay? (Yes - proceed to step 2; No - repair wiring and retest)
- 2Check the intake manifold pressure using a scan tool or multimeter while running the engine. Normal pressure range should be verified. Decision point: Is the MAP sensor reading within expected values? (Yes - proceed to step 3; No - replace MAP sensor)
- 3Inspect the intake system for any vacuum leaks, including hoses and gaskets. Decision point: Are there leaks found? (Yes - repair leaks and retest; No - further diagnose ECU)
Common causes
- Faulty MAP sensor
- Wiring issues or bad connectors
- Vacuum leaks in the intake system
- Faulty ECU programming or internal fault
Typical repair cost
$$
Related codes
Frequently asked questions
Is it safe to drive with this code?
It's not ideal; while you may be able to drive, performance issues can occur, and it’s best to fix soon.
What happens if I ignore this code?
Ignoring this code can lead to poor engine performance, reduced fuel efficiency, and possible larger repairs in the future.
Could this code be related to other issues?
Yes, issues with the MAP sensor can sometimes overlap with problems in the intake system or with the turbocharger.
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