OBD Guide

P2A0C

Manifold Absolute Pressure Sensor B Circuit Low

P2A0C is an OBD-II diagnostic trouble code meaning: Manifold Absolute Pressure Sensor B Circuit Low. Common causes: open or short circuit in map b sensor circuit, poor contact in the sensor connector. Estimated repair cost: $17–56.

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

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

Related codes

Error P2A0C by Vehicle Brand

FAQ

What does the P2A0C code mean?

P2A0C is an OBD-II diagnostic trouble code that indicates: Manifold Absolute Pressure Sensor B Circuit Low

What causes a P2A0C error code?

The most common causes of P2A0C include: Open or short circuit in MAP B sensor circuit; Poor contact in the sensor connector; Absolute pressure sensor B fault; Wiring Harness Problems.

How do I fix a P2A0C diagnostic trouble code?

To fix P2A0C: Check continuity of MAP sensor B. Inspect and clean the sensor connector contacts. Check the functionality of the sensor using a scanner. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P2A0C?

Limited driving only, diagnose soon

How much does it cost to fix P2A0C?

The estimated repair cost for P2A0C is $17–56. Actual cost depends on your vehicle, location, and labor rates.

See also: Russian version · NationStat