P2A0C

Manifold Absolute Pressure Sensor B Circuit Low

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$17–56 (est.)

Symptoms

Unstable engine idling
Reduced engine power
Increased fuel consumption
Check Engine Light Illuminates
Dips during acceleration

Causes

Open or short circuit in MAP B sensor circuit
Poor contact in the sensor connector
Absolute pressure sensor B fault
Wiring Harness Problems
Engine control unit malfunction

How to Fix

Check continuity of MAP sensor B
Inspect and clean the sensor connector contacts
Check the functionality of the sensor using a scanner
Replace MAP B sensor if necessary
Test the operation of the system after repair

Related codes

P2A0D P0105 P0106