P01A8

Alternative Fuel Rail/System Pressure - Too Low

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$56–222 (est.)

Symptoms

Loss of engine power
Misfires
Unstable idle
Difficulty starting the engine
Increased fuel consumption

Causes

Alternate fuel pump malfunction
Leaks in the fuel system
Faulty fuel pressure regulator
Dirty fuel filters
Problems with the fuel pressure sensor
Malfunction of the solenoid valve (solenoid)

How to Fix

Check the fuel system for leaks
Check the pressure in the fuel system using a pressure gauge
Check the condition of the fuel pump and its performance
Check and replace fuel filters if necessary
Check the operation of the fuel pressure regulator
Check the fuel pressure sensor and its wiring harness
If necessary, replace faulty components

Related codes

P0171 P0172 P0190 P0191 P0192