OBD Guide

P01C1

Fuel Rail Pressure Sensor Circuit High Bank 2

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$56–167 (est.)

Symptoms

  • Loss of engine power
  • Unstable idling
  • Increased fuel consumption
  • Check Engine Light Illuminates
  • Possible misfires

Causes

  • Fuel rail pressure sensor malfunction
  • Open or short circuit in wiring harness
  • Problems with sensor connectors
  • Engine control unit malfunction
  • Increased pressure in the fuel rail

How to Fix

  1. Check the integrity of the wiring harness and connectors
  2. Measure the resistance and voltage of the sensor
  3. Check the pressure in the fuel rail
  4. If necessary, replace the pressure sensor
  5. Clear error codes and check system operation

Related codes

Error P01C1 by Vehicle Brand