P2A8A

Alternative Fuel Pump C Compression Stroke Valve Control Circuit High

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

Check the condition of connectors and wiring
Measure the resistance of the injection pump valve
Check control circuit voltage
Replace the faulty injection pump valve if necessary
Check and reflash the engine control unit

Related codes

P2A89 P2A8B P0087