OBD Guide

P2A7C

Alternative Fuel Hydraulic Pressure Sensor Circuit Low

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

Symptoms

  • Check Engine light comes on
  • Reduced engine power
  • Problems starting the engine
  • Unstable engine idling

Causes

  • Alternate fuel pressure sensor malfunction
  • Open or short circuit in wiring
  • Poor contact in connectors
  • Problems with the engine control unit

How to Fix

  1. Check the integrity of wiring and connectors
  2. Check the functionality of the pressure sensor
  3. Replace pressure sensor if necessary
  4. Check and, if necessary, replace the engine control unit

Related codes

Error P2A7C by Vehicle Brand