P2A2D reports excessive voltage on the control circuit of shutoff valve D. The AFCM fault list from TransEco Energy names a short to power, lights the MIL and keeps the gas system in service; P2A1D stands next to it. Ford's 2014 Boss 302S list includes P2A2D without the MIL marker. A wire pinched against a supply cable, a module output that stays on or an error while wiring a conversion kit are the likely findings. The practical concern is that the solenoid may remain energized, so cylinder D is not sealed when the engine stops or a crash cuts the supply. Before any work on the harness, close the manual valves on the tanks. P2A2C covers the low readings of this valve, P2A29 the high fault on valve C.
High severity. Can I keep driving?If you smell gas, do not keep driving or start the engine: move away and call for assistance. With no smell, drive moderately to an authorized shop.
Symptoms
- Check engine light
- Tank D possibly open with the engine off
Most likely causes
- Valve D lead pinched against a supply cable
- Module output for valve D stays on
- Error while wiring a conversion kit
What to check, in order
Start with the simplest. You can tick off each step.
Good to know
- Repair difficulty: hard
- It affects emissions.
What each character of P2A2D means
- P: Powertrain: engine and transmission
- 2: Generic code: same on every make
- A: Hybrid or air and fuel
- 2D: Specific fault in that system
Frequently asked questions
Can I keep driving with code P2A2D?
If you smell gas, do not keep driving or start the engine: move away and call for assistance. With no smell, drive moderately to an authorized shop.
What causes code P2A2D?
The most common causes are: valve D lead pinched against a supply cable; module output for valve D stays on; error while wiring a conversion kit.
Related codes
- P2A2AAlternative Fuel Tank Shutoff Valve D Control Circuit/Open
- P2A2BAlternative Fuel Tank Shutoff Valve D Control Circuit Performance/Stuck Off
- P2A2CAlternative Fuel Tank Shutoff Valve D Control Circuit Low
- P2A29Alternative Fuel Tank Shutoff Valve C Control Circuit High
- P2A31Alternative Fuel Tank Shutoff Valve E Control Circuit High
Sources
- transecoenergy.com: DTC List
- performanceparts.ford.com: 2014 BOSS 302S OBDII Codes
- law.cornell.edu: 13 CCR 1968.2
Values and procedures vary by manufacturer. If it affects brakes, steering, fuel or high voltage, see a professional. Updated: 2026-11-04. How we build these pages.