P2307 code meaning
Ignition Coil C Primary Control Circuit High
Powertrain system Generic code P23xx codes Check engine light
What P2307 means
P2307 sets when the coil C control line, cylinder 3 in most layouts, is shorted to a voltage source. On GM's 3.6-litre LLT V6 (2008) the check is a continuity test against voltage that runs below 6,000 rpm with the battery between 9.99 and 18.1 V and needs 4 s at a stretch or 50 s in total. Do not trust the letter blindly on Ford: special service message 52342 for the 2021–2024 Bronco 2.3 and 3.0 EcoBoost explains that the PCM may file P2307 and its neighbours under the wrong cylinder, while still cutting fuel to the cylinder it has blamed. Ford's advice is a power balance test with its scan tool; the cylinder that drops out without a code of its own is the one to repair. Saab's Trionic 8 treats an open line on cylinder 3 as P2307 as well.
P2307 at a glance
- Check engine lightYes, usually on
- Emissions testCan fail
- Limp modePossible
- Repair difficultyMedium, DIY possible
- Typical labor0.3 to 2 hours
- Clears after repairWhen cleared with a scanner
Symptoms of P2307
- Check engine light on
- Cylinder 3 misfires
- Power loss, engine runs rough
Common causes of P2307
- Most likelyCoil C control wire touching a battery-voltage line
- PossibleCoil C with an internal short to its supply
- PossibleCode filed against the wrong cylinder by PCM software (Ford Bronco SSM 52342)
- Less likelyBroken control wire on systems reporting opens here (Saab Trionic 8)
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Ignition coilCoil driverIgnition wiring
What each part of P2307 means
| P | Powertrain system: engine, fuel system, ignition, emissions and transmission. |
| 2 | Generic code (second SAE range): it means the same on every make. |
| 3 | Area: ignition system or misfire. |
| 07 | The exact fault in that area. |
What to do next
- Note P2307 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 P2307
What does P2307 mean?
P2307 means "Ignition Coil C Primary Control Circuit High". P2307 sets when the coil C control line, cylinder 3 in most layouts, is shorted to a voltage source. It is a generic code, so it means the same on every make.
Is it safe to drive with P2307?
Drive gently and only to a workshop. With P2307 the car can go into limp mode (reduced power) to protect itself.
Will P2307 fail an emissions test?
Yes, it can. P2307 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 P2307 to fix?
Difficulty: medium. A typical repair takes 0.3 to 2 hours of work. A careful DIY repair is possible with basic tools and a scanner.
Will P2307 clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.