P230E code meaning
Cylinder 5 Air-Fuel Ratio Imbalance - Adjustment At Limit During Balance
Powertrain system Generic code P23xx codes Check engine light
What P230E means
P230E concerns cylinder 5 and is genuine only on engines with five or more cylinders, such as inline fives, sixes and V8s. The balancing logic has exhausted the individual fuel trim for cylinder 5. Audi documents a special case: on the 2020 A6 with the four-cylinder 2.0 TFSI (EA888 Gen 3) a calibration error stored a cylinder 2 imbalance as P230E, so on that car the code really points at cylinder 2, while the guided tests still diagnose the right cylinder; the bulletin is informational and offers no fix. A P230E on a four-cylinder is therefore a reason to check the software and the bulletins first. VW's 2014 Golf table already includes the plain cylinder 5 code P21A0 for its five-cylinder; P0305 is the misfire counter for the same cylinder.
P230E at a glance
- Check engine lightYes, usually on
- Emissions testCan fail
- Limp modeNot expected
- Repair difficultyMedium
- Typical labor0.5 to 6 hours
- Clears after repairAfter a drive cycle
Symptoms of P230E
- Check engine light on
- Rough idle, possibly misfire on cylinder 5
- Higher fuel consumption or exhaust smell
Common causes of P230E
- Most likelyInjector of cylinder 5 delivering too much or too little (deposits, wear)
- PossibleAir leak at the intake port or injector seal of cylinder 5
- PossibleValve of cylinder 5 not sealing (worn seat or guide), low compression
- PossibleCalibration error in the cylinder assignment (Audi 2.0 TFSI Gen 3, bulletin 2060348)
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Fuel injector cyl 5Intake manifoldCylinder compression
What each part of P230E 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. |
| 0E | The exact fault in that area. |
What to do next
- Note P230E 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 P230E
What does P230E mean?
P230E means "Cylinder 5 Air-Fuel Ratio Imbalance - Adjustment At Limit During Balance". P230E concerns cylinder 5 and is genuine only on engines with five or more cylinders, such as inline fives, sixes and V8s. It is a generic code, so it means the same on every make.
Is it safe to drive with P230E?
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 P230E fail an emissions test?
Yes, it can. P230E 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 P230E to fix?
Difficulty: medium. A typical repair takes 0.5 to 6 hours of work. This is a job for a workshop.
Will P230E 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.