P2A6B

Alternative Fuel Rail Pressure Regulator Inlet Pressure Sensor Circuit Low

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$33–89 (est.)

Symptoms

Check engine light comes on
Reduced engine power
Unstable operation of the engine using alternative fuel
Increased fuel consumption
Problems starting an engine on alternative fuel

Causes

Fuel pressure sensor malfunction
Open or short circuit in wiring harness
Connection problems or connector corrosion
Fuel pressure regulator malfunction
Problems with the engine control unit

How to Fix

Check the integrity of the sensor wiring harness
Check connections and cleanliness of contacts
Measure the resistance and voltage of the pressure sensor
Replace the fuel pressure sensor if necessary
Check the operation of the fuel pressure regulator

Related codes

P2A6A P2A6C P2A6D