What does code P1156 mean on Audi vehicles?
The MAP sensor circuit is open or shorted to ground.
OBD-II Code Audi
P1156 — Audi — Manifold Absolute Pressure Sensor Circuit Open or Short to Ground
The MAP sensor circuit is open or shorted to ground.
Common symptoms
- Unstable engine operation
- power loss.
Possible causes
- Damaged wiring or faulty MAP sensor.
Initial recommendation
Inspect MAP sensor circuit.
Safety notice
This information is for guidance only. Brand-specific codes may vary by model, year, engine, transmission and vehicle configuration. It does not replace a physical inspection or diagnosis by a qualified mechanic. If the vehicle is unsafe to operate, avoid driving it and seek professional inspection.
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