P2A86

Alternative Fuel Pump B Compression Stroke Valve Control Circuit High

Severity

⚠️ Medium

Can you drive?

Yes, but get it checked soon

Approx. repair cost

$17–89 (est.)

Symptoms

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

Causes

Open or short circuit in valve control circuit
Fuel pump solenoid valve malfunction
Problems with the wiring harness or connectors
Engine control unit (ECU) malfunction
Corrosion of contacts in an electrical circuit

How to Fix

Check valve control circuit integrity
Check the resistance and operation of the solenoid valve
Inspect the wiring harness and connectors for damage.
Check power and ground in the circuit
If necessary, replace faulty components

Related codes

P2A85 P2A87 P2A88