P2A84

Alternative Fuel Pump B Compression Stroke Valve Control Circuit Range/Performance

Severity

⚠️ Medium

Can you drive?

Yes, but get it checked soon

Approx. repair cost

$17–89 (est.)

Symptoms

Unstable engine operation
Power reduction
Increased fuel consumption
Difficulty starting the engine
Check Engine Light Is On

Causes

Fuel pump control valve B malfunction
Open or short circuit in control circuit
Poor contact in connectors
Engine control unit (ECU) malfunction
Mechanical problems with the fuel pump

How to Fix

Check the condition of the fuel pump control valve B
Check the integrity of the control circuit and the quality of contacts
Test the operation of the engine control unit
Check the mechanical condition of the fuel pump
Replace faulty components

Related codes

P2A85 P2A86 P2A87