P027D

Fuel Pump Module B Control Circuit High

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$56–222 (est.)

Symptoms

Unstable engine operation
Power Loss
Difficulty starting the engine
Increased fuel consumption

Causes

Open or short circuit in wiring harness
Malfunction of fuel pump module B
Problems with the fuel pump relay
ECU malfunction

How to Fix

Check wiring harness for damage
Check the voltage in the control circuit of the fuel pump module B
Check the operation of the fuel pump relay
If necessary, replace fuel pump module B
Check and reflash the ECU (if required)

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