Fuel and air metering

P0107 — Manifold Absolute Pressure/Barometric Pressure Circuit Low Input

The MAP sensor signal voltage is lower than normal. The ECU sees an unrealistically low intake pressure and calculates the wrong load and fuel quantity.

Severity: Medium

Common causes

  • Faulty MAP sensor
  • Open or shorted signal wire, or poor ground
  • Poor sensor connector contact
  • Disconnected or leaking vacuum hose
  • Sensor supply voltage missing

Symptoms

  • Lean running or hesitation
  • Rough idle
  • Stalling
  • Check engine light

How to check

  1. Check the sensor connector and wiring
  2. Measure the 5 V reference, ground and signal
  3. Check the vacuum hose to the sensor
  4. Replace the sensor if the signal stays low with the circuit in good condition

Can you keep driving?

Short drives are possible, but the engine may run poorly or stall. Repair soon.

Frequently asked questions

What does P0107 mean?
The MAP sensor is sending a voltage lower than its normal working range.
Can a bad connector cause P0107?
Yes. A loose, corroded or damaged connector is a common cause.

General reference information. It does not replace a diagnosis on your own vehicle. The same code can have different causes depending on make, model year and engine; check the manufacturer's documentation or ask a technician with a scan tool.