P01A7

Alternative Fuel Rail Pressure Sensor Circuit Intermittent/Erratic

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$56–167 (est.)

Symptoms

Unstable engine idling
Power Loss
Increased fuel consumption
The engine stalls
Check Engine light comes on

Causes

Malfunction of the fuel rail pressure sensor
Open or short circuit in wiring harness
Bad contacts in the sensor connectors
Circuit Grounding Problems
ECU malfunction

How to Fix

Check the integrity of the sensor wiring harness
Check the quality of contacts in the connectors
Check sensor resistance and reference voltage
Check circuit grounding
If necessary, replace the fuel rail pressure sensor

Related codes

P01A8 P0190 P0191 P0192 P0193