OBD Guide

P2A26

Alternative Fuel Tank Shutoff Valve C Control Circuit/Open

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

Symptoms

  • Car switches to petrol when running on gas
  • Engine stalls when trying to use alternative fuel
  • The malfunction indicator light comes on
  • Reduced engine power
  • Inability to start on alternative fuel

Causes

  • Broken wires to the shut-off valve
  • Short circuit in control circuit
  • Solenoid valve malfunction
  • Problems with the HBO control module
  • Oxidation of contacts in connectors

How to Fix

  1. Check the integrity of the wiring to the valve
  2. Measure the resistance of the solenoid valve
  3. Check voltage at valve connector
  4. Flash or replace the LPG control module if necessary
  5. Replacing a faulty shut-off valve

Related codes

Error P2A26 by Vehicle Brand