P2A26 code meaning
Alternative Fuel Tank Shutoff Valve C Control Circuit/Open
Powertrain system Generic code P2Axx codes Check engine light
What P2A26 means
P2A26 is the open-circuit code for shutoff valve C, the solenoid on yet another gas cylinder. The module drives the coil and finds that no current flows, so the coil, its plug or the lead to it is interrupted. No manufacturer documents P2A26 publicly. What the repair costs depends on the design: in GM's single-tank bi-fuel Impala (bulletin PI1330) the high-pressure solenoid is threaded into the tank's manual valve and counts as non-serviceable, so a faulty one means a new tank, whereas New Flyer buses allow the coil alone to be exchanged. CARB requires output components to be watched for open and shorted circuits. Valves B, D and E have their own open-circuit codes, P2A22, P2A2A and P2A2E.
P2A26 at a glance
- Check engine lightYes, usually on
- Emissions testCan fail
- Limp modeNot expected
- Repair difficultyHard
- Typical labor0.5 to 4 hours
- Clears after repairWhen cleared with a scanner
Symptoms of P2A26
- Check engine light
- Gas in cylinder C cannot be used
Common causes of P2A26
- Most likelyInterrupted lead or unplugged connector at valve C
- PossibleOpen coil in valve C
- Less likelyFaulty driver for valve C in the control module
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Alt fuel tank shutoff valve cWiring harnessAfcm
What each part of P2A26 means
| P | Powertrain system: engine, fuel system, ignition, emissions and transmission. |
| 2 | Generic code (second SAE range): it means the same on every make. |
| A | Area: hybrid propulsion. |
| 26 | The exact fault in that area. |
What to do next
- Note P2A26 and any other codes stored with it: several codes together often point to one cause.
- Check for loose connectors and damaged wiring around the parts the code names.
- Check open recalls for your car: some faults are fixed for free by the dealer. Enter your VIN.
- Clear the code only after the repair. If it comes back, the fault is still there.
Buying a used car? Scan it for stored codes before you pay. A recently cleared memory can hide a problem.
Questions about P2A26
What does P2A26 mean?
P2A26 means "Alternative Fuel Tank Shutoff Valve C Control Circuit/Open". P2A26 is the open-circuit code for shutoff valve C, the solenoid on yet another gas cylinder. It is a generic code, so it means the same on every make.
Is it safe to drive with P2A26?
Usually yes, for a short time, if the check engine light is steady and the car drives normally. If the light flashes or the car runs badly, stop and have it checked.
Will P2A26 fail an emissions test?
Yes, it can. P2A26 is emissions-related, so most inspection programs fail a car while it is stored or while the check engine light is on.
How hard is P2A26 to fix?
Difficulty: hard. A typical repair takes 0.5 to 4 hours of work. This is a job for a workshop.
Will P2A26 clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.