P2A62 code meaning
Alternative Fuel Tank B Level Sensor Circuit High
Powertrain system Generic code P2Axx codes Check engine light
What P2A62 means
P2A62 is set when the tank B level signal climbs above the highest voltage a working sender delivers at full. For its dual-tank propane trucks Roush blames the high case on a disconnected sender or a wire shorted to more than 5 V, and with the second-tank code P2068 the gauge again falls back to the primary tank only. A broken ground at the sender gives the same picture on most pull-up inputs. The risk is the opposite of P2A61: if the reading were accepted, tank B would look full while it empties, so the module discards it. No manufacturer documents P2A62 itself. Check that the plug at the tank B sender is seated and locked, then test ground continuity before replacing the sender.
P2A62 at a glance
- Check engine lightYes, usually on
- Emissions testCan fail
- Limp modeNot expected
- Repair difficultyMedium
- Typical labor0.5 to 3 hours
- Clears after repairWhen cleared with a scanner
Symptoms of P2A62
- Check engine light
- Gauge shows only the primary tank
- Content of tank B unknown to the driver
Common causes of P2A62
- Most likelyTank B sender unplugged or wire open
- PossibleSender ground interrupted
- Less likelySignal wire shorted to a voltage above 5 V
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Alt fuel tank b level sensorWiring harnessAfcm
What each part of P2A62 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. |
| 62 | The exact fault in that area. |
What to do next
- Note P2A62 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 P2A62
What does P2A62 mean?
P2A62 means "Alternative Fuel Tank B Level Sensor Circuit High". P2A62 is set when the tank B level signal climbs above the highest voltage a working sender delivers at full. It is a generic code, so it means the same on every make.
Is it safe to drive with P2A62?
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 P2A62 fail an emissions test?
Yes, it can. P2A62 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 P2A62 to fix?
Difficulty: medium. A typical repair takes 0.5 to 3 hours of work. This is a job for a workshop.
Will P2A62 clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.