P2A35 code meaning
AFCM Power Relay Sense Circuit
Powertrain system Generic code P2Axx codes Check engine light
What P2A35 means
Besides driving the relay coil, a control module can read back the voltage behind the relay contacts to confirm that power actually arrives. P2A35 is the general fault of this feedback line for the relay that supplies the gas control module, without a statement about too low or too high. Typical are an open sense wire, a corroded pin or a blown fuse between contact and sense point. Roush CleanTech's propane manual for Ford trucks lists a missing supply, a blown fuse or lost power and ground of its alternative fuel module as reasons for losing it on the bus (U0108), which shows how supply problems surface there. No published calibration uses P2A35; the engine-relay sibling P0688 is the analogue. Electrical symptoms may be absent while the relay itself still works.
P2A35 at a glance
- Check engine lightYes, usually on
- Emissions testCan fail
- Limp modeNot expected
- Repair difficultyMedium, DIY possible
- Typical labor0.5 to 2 hours
- Clears after repairWhen cleared with a scanner
Symptoms of P2A35
- Check engine light, depending on calibration
- Often no drivability change
- Occasional fallback to gasoline if the supply really drops
Common causes of P2A35
- Most likelySense wire open or pin backed out
- PossibleBlown fuse between relay contact and sense point
- PossibleCorroded terminals in relay socket or module plug
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Afcm power relayAfcmWiring harness
What each part of P2A35 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. |
| 35 | The exact fault in that area. |
What to do next
- Note P2A35 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 P2A35
What does P2A35 mean?
P2A35 means "AFCM Power Relay Sense Circuit". Besides driving the relay coil, a control module can read back the voltage behind the relay contacts to confirm that power actually arrives. It is a generic code, so it means the same on every make.
Is it safe to drive with P2A35?
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 P2A35 fail an emissions test?
Yes, it can. P2A35 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 P2A35 to fix?
Difficulty: medium. A typical repair takes 0.5 to 2 hours of work. A careful DIY repair is possible with basic tools and a scanner.
Will P2A35 clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.