P2A0E
Manifold Absolute Pressure Sensor B Circuit Intermittent/Erratic
The MAP B signal drops out or jumps intermittently. Loose connector or noisy ground reference. Wiring faults of this kind typically come from chafing, water ingress at connector seals, or pin push-back — a wiggle test on the harness while the code is active often confirms the location.
The MAP B signal drops out or jumps intermittently. Loose connector or noisy ground reference. Wiring faults of this kind typically come from chafing, water ingress at connector seals, or pin push-back — a wiggle test on the harness while the code is active often confirms the location.
Common causes
- high
Sensor connector not seated
One of the most commonly reported causes for this code — check this first.
Typical part cost: $60-280
- medium
Noisy ground reference
A plausible cause — test and verify before replacing parts.
Typical part cost: $60-280
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First things to check
- 1Confirm the code with a scan tool and check for additional related codes.
- 2Inspect the relevant sensors, wiring, and connectors for damage or corrosion.
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Related codes
See related trouble codes
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Frequently asked questions
What does P2A0E mean?
P2A0E means "Manifold Absolute Pressure Sensor B Circuit Intermittent/Erratic". It is a generic OBD-II code that points to a fault in the auxiliary emission controls.
What are the most common causes of P2A0E?
sensor connector not seated; noisy ground reference; connector with intermittent contact under vibration — these are the most commonly reported causes. Verify with a proper diagnosis before replacing parts, or use the Wrenchify app for a vehicle-specific diagnosis.
Can I keep driving with this code?
The vehicle is usually drivable for short distances, but the problem can worsen or affect emissions. Diagnose and repair as soon as practical. Use the Wrenchify app for a full diagnosis specific to your vehicle.
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