Powertrain
Definition only
Lights the check engine lamp
P26B6: Fuel Shutoff Valve B Control Circuit Stuck On
Standardized SAE J2012 code · P26xx — Computer and output circuits
What does P26B6 mean?
The second fuel shutoff valve stays open when commanded closed.
The code tells you which monitor failed, not which part is broken. Test before replacing parts.
Common causes
- High Valve seized open by debris
- Medium ECU output driver stuck on
- Low Carbon or debris buildup preventing free movement
Likelihood is a general estimate across vehicles; your make and model may differ.
Add your car to see reports of P26B6 on the same make and model first.
P26B6 in the community
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