P01A3

Alternative Fuel Rail Pressure Sensor Circuit

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$56–167 (est.)

Symptoms

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

Causes

Fuel pressure sensor malfunction
Open or shorted wiring harness
Poor contact in the sensor connector
Problems with the ECU

How to Fix

Check the integrity of the sensor wiring harness
Check the contacts in the sensor connector
Check sensor resistance (compare with nominal)
Replace sensor if necessary
Reset the error and check if it returns

Related codes

P01A0 P01A1 P01A2 P01A4