P2A92 code meaning
Alternative Fuel Tank Select Valve A Control Performance
Powertrain system Generic code P2Axx codes Check engine light
What P2A92 means
P2A92 is the functional check for tank select valve A: the wiring tests pass, yet the fuel system does not behave as if the commanded vessel were connected. Software can judge this only through pressures. A patent by Cespira, the Westport and Volvo venture, outlines the logic for two compressed-gas supplies with their own pressure sensors: a supply-select valve assembly routes one supply to a compressor and the other to the regulator, and stages change whenever a supply falls under a set pressure. After such a command the newly chosen supply should start to lose pressure while the other holds steady. If nothing changes, or the wrong tank empties, valve A is probably sticking or leaking across its seat. No manufacturer publishes P2A92 or a threshold for it.
P2A92 at a glance
- Check engine lightYes, usually on
- Emissions testCan fail
- Limp modePossible
- Repair difficultyWorkshop only
- Typical labor1.5 to 5 hours
- Clears after repairAfter a drive cycle
Symptoms of P2A92
- Malfunction lamp on
- Tanks empty unevenly or in the wrong order
- Short gas supply although one vessel still holds fuel
Common causes of P2A92
- Most likelySelect valve A sticking from dirt, ice or wear
- PossibleValve A leaking across its seat so both vessels are drawn
- Less likelyTank pressure sensor giving a misleading reading
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Alt fuel tank select valve aWiring harnessAfcm
What each part of P2A92 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. |
| 92 | The exact fault in that area. |
What to do next
- Note P2A92 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 P2A92
What does P2A92 mean?
P2A92 means "Alternative Fuel Tank Select Valve A Control Performance". P2A92 is the functional check for tank select valve A: the wiring tests pass, yet the fuel system does not behave as if the commanded vessel were connected. It is a generic code, so it means the same on every make.
Is it safe to drive with P2A92?
Drive gently and only to a workshop. With P2A92 the car can go into limp mode (reduced power) to protect itself.
Will P2A92 fail an emissions test?
Yes, it can. P2A92 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 P2A92 to fix?
Difficulty: workshop only. A typical repair takes 1.5 to 5 hours of work. This is a job for a workshop.
Will P2A92 clear itself after the repair?
After the repair the car has to complete a drive cycle (a mix of city and highway driving) before the test runs again. Until then the readiness monitor shows "not ready", which can fail an inspection.