P2333 code meaning
Ignition Coil L Primary Control Circuit Low
Powertrain system Generic code P23xx codes Check engine light
What P2333 means
P2333 is the ground-short code for coil L, the twelfth and final coil letter in the SAE scheme. It fits only V12 or W12 engines. There is no public manufacturer documentation for it; the published lists of Ford and GM end at coils J and H. Read by analogy with GM's description of its lower coil codes, the module compares the voltage on the coil L control line with its own limits and records a short to ground after repeated bad samples. CARB's comprehensive component monitoring obliges the system to catch this kind of circuit fault. Note that the letter is a fixed SAE slot, not a cylinder number; a maker may assign coil L to a cylinder other than 12, so the service information of the vehicle decides which coil to inspect. The open-circuit partner is P0362.
P2333 at a glance
- Check engine lightYes, usually on
- Emissions testCan fail
- Limp modePossible
- Repair difficultyHard
- Typical labor0.5 to 4 hours
- Clears after repairAfter a drive cycle
Symptoms of P2333
- Check engine light on
- One cylinder (usually 12) not firing
- Mild roughness at idle
Common causes of P2333
- Most likelyCoil L shorted internally
- PossibleCoil L control wire chafed to ground
- PossibleDamaged or corroded coil L connector
- Less likelyCoil L output stage in the engine module failed
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 P2333 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. |
| 33 | The exact fault in that area. |
What to do next
- Note P2333 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 P2333
What does P2333 mean?
P2333 means "Ignition Coil L Primary Control Circuit Low". P2333 is the ground-short code for coil L, the twelfth and final coil letter in the SAE scheme. It is a generic code, so it means the same on every make.
Is it safe to drive with P2333?
Drive gently and only to a workshop. With P2333 the car can go into limp mode (reduced power) to protect itself.
Will P2333 fail an emissions test?
Yes, it can. P2333 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 P2333 to fix?
Difficulty: hard. A typical repair takes 0.5 to 4 hours of work. This is a job for a workshop.
Will P2333 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.