OBD Guide

P2A8A

Alternative Fuel Pump C Compression Stroke Valve Control Circuit High

P2A8A is an OBD-II diagnostic trouble code meaning: Alternative Fuel Pump C Compression Stroke Valve Control Circuit High. Common causes: faulty injection pump solenoid valve, open or short circuit in control circuit. Estimated repair cost: $33–167.

Severity
⚠️ Medium
Can you drive?
Yes, but get it checked soon
Approx. repair cost
$33–167 (est.)

Symptoms

  • Check Engine light comes on
  • Reduced engine power
  • Unstable engine idling
  • Increased fuel consumption
  • Difficulty starting the engine

Causes

  • Faulty injection pump solenoid valve
  • Open or short circuit in control circuit
  • Poor contact in connectors
  • Contact corrosion
  • Engine control unit malfunction

How to Fix

  1. Check the condition of connectors and wiring
  2. Measure the resistance of the injection pump valve
  3. Check control circuit voltage
  4. Replace the faulty injection pump valve if necessary
  5. Check and reflash the engine control unit

Related codes

Error P2A8A by Vehicle Brand

FAQ

What does the P2A8A code mean?

P2A8A is an OBD-II diagnostic trouble code that indicates: Alternative Fuel Pump C Compression Stroke Valve Control Circuit High

What causes a P2A8A error code?

The most common causes of P2A8A include: Faulty injection pump solenoid valve; Open or short circuit in control circuit; Poor contact in connectors; Contact corrosion.

How do I fix a P2A8A diagnostic trouble code?

To fix P2A8A: Check the condition of connectors and wiring. Measure the resistance of the injection pump valve. Check control circuit voltage. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P2A8A?

Yes, but get it checked soon

How much does it cost to fix P2A8A?

The estimated repair cost for P2A8A is $33–167. Actual cost depends on your vehicle, location, and labor rates.

See also: Russian version · NationStat