OBD Guide

P26B6

Fuel Shutoff Valve B Control Circuit Stuck On

Severity
⚠️ Medium
Can you drive?
Do not drive — repair immediately
Approx. repair cost
$17–56 (est.)

Symptoms

  • Increased fuel consumption
  • The engine does not stall after turning off the ignition
  • Problems starting the engine
  • Check Engine Light Is On
  • Unstable engine operation at idle

Causes

  • Fuel cut-off valve B malfunction
  • Open or short circuit in control circuit
  • Relay or fuse problems
  • Malfunction of the engine control unit (ECU)
  • Wiring harness damage

How to Fix

  1. Check the condition of the fuel shut-off valve B
  2. Check the integrity of the control circuit and connections
  3. Check relays and fuses
  4. Test the operation of the ECU
  5. Replace faulty valve if necessary

Related codes

Error P26B6 by Vehicle Brand