OBD Guide

P2C03

Fuel Pressure Regulator D Control Circuit Low

Severity
⚠️ Medium
Can you drive?
Yes, but get it checked soon
Approx. repair cost
$17–56 (est.)

Symptoms

  • Unstable engine operation
  • Increased fuel consumption
  • Difficulty starting the engine
  • Power Loss
  • Check Engine Light Is On

Causes

  • Open or short circuit in control circuit
  • Malfunction of fuel pressure regulator D
  • Problems with connectors or wiring harness
  • Malfunction of the engine control unit (ECU)
  • Poor contact in the circuit

How to Fix

  1. Check the integrity of the fuel pressure regulator control circuit D
  2. Inspect connectors and wiring harness for damage
  3. Check the functionality of the fuel pressure regulator D
  4. Test the engine control unit (ECU)
  5. Replace faulty components

Related codes

Error P2C03 by Vehicle Brand