PowertrainP0263
CautionSeverity: Caution - get it checked when you can
Cylinder 1 Contribution/Balance
Key terms: Oxygen sensor: measures oxygen in the exhaust gas · Mass air flow sensor: measures the air going into the engine · SAE J2012: the standard generic code list · Powertrain: engine, transmission and emissions
1What it means in plain English
This code is in the powertrain range that covers fuel and air metering, over-temperature, overspeed and transmission over-temperature conditions.
2Common causes
- Dirty or faulty mass air flow sensor
- Vacuum or intake air leak
- Weak fuel pump or clogged fuel filter
- Faulty fuel injector
- Faulty oxygen sensor
- Wiring or connector fault
3Can I drive?
Do not assume this code is safe to ignore: some codes in this range affect engine safety systems. Have it diagnosed; if the engine is overheating, a red warning light is on, or the engine loses power or cuts out, stop safely and get professional help.
This page gives general information. It is not professional advice. For a definite diagnosis and a repair quote, ask a qualified mechanic to inspect the car.
4Brand data 34
| Brand | Code | Description | System |
|---|---|---|---|
| Ashok Leyland CV | P0263 | Clutch A. Electric Motor. Phase U-V-W. Low Signal Brand | Powertrain |
| BAIC Motor | P0263 | Cylinder 1 Contribution/Balance Brand | Powertrain |
| BMW | P0263 | Cylinder 1 Contribution/Balance Brand | Powertrain |
| BYD | P0263 | Cylinder 1 Contribution/Balance Brand | Powertrain |
| Chery | P0263 | Cylinder 1 Contribution/Balance Brand | Powertrain |
| Daewoo | P0263 | Cylinder 1 Contribution/Balance Brand | Powertrain |
| Daihatsu | P0263 | Injector abnormal #1 Brand | Powertrain |
| DFFS | P0263 | Cylinder 1 Contribution/Balance Brand | Powertrain |
| DFFX | P0263 | Cylinder 1 Contribution/Balance Brand | Powertrain |
| DFXK | P0263 | Cylinder 1 Contribution/Balance Brand | Powertrain |
| EOBD | P0263 | Silindir 1 katkı/denge Brand | Powertrain |
| Geely | P0263 | Cylinder 1 Contribution/Balance Brand | Powertrain |
| GM | P0263 | Cylinder 1 balance system Brand | Powertrain |
| Great Wall | P0263 | Cylinder 1 Contribution/Balance Brand | Powertrain |
| Hafei | P0263 | Cylinder 1 Contribution/Balance Brand | Powertrain |
| Holden | P0263 | Cylinder 1 Balance System Brand | Powertrain |
| Honda | P0263 | Cylinder 1 Contribution/Balance SAE | Powertrain |
| Hyundai | P0263 | Cylinder 1 Contribution/Balance SAE | Powertrain |
| Isuzu | P0263 | Cylinder 1 Contribution/Balance SAE | Powertrain |
| Land Rover | P0263 | Cylinder 1 Contribution/Balance SAE | Powertrain |
| Mahindra | P0263 | Cylinder 1 Contribution/Balance SAE | Powertrain |
| Maserati | P0263 | Cylinder 1 Contribution/Balance Brand | Powertrain |
| Mitsubishi | P0263 | No.1 injector contribution Brand | Powertrain |
| Opel | P0263 | Cylinder 1 balance system Brand | Powertrain |
| Perodua | P0263 | Injector abnormal #1 Brand | Powertrain |
| Peugeot | P0263 | Cylinder 1 Contribution/Balance SAE | Powertrain |
| Porsche | P0263 | Cylinder 1 Contribution/Balance SAE | Powertrain |
| Proton | P0263 | No.1 injector contribution Brand | Powertrain |
| Saab | P0263 | Cylinder 1 balance system Brand | Powertrain |
| MG (SAIC) | P0263 | Cylinder 1 Contribution/Balance Brand | Powertrain |
| Suzuki | P0263 | Cylinder 1 Contribution / Balance Brand | Powertrain |
| Tata | P0263 | Cylinder 1 Combustion Imbalance Brand | Powertrain |
| Toyota | P0263 | Cylinder 1 contribution/balance Brand | Powertrain |
| Volkswagen | P0263 | Fuel injector #1 (N30): contribution/balance fault Brand | Powertrain |
Legend: SAE is the generic J2012 description; Brand is text taken from that manufacturer’s data. Manufacturer rows keep the wording and language of the source data, and non-English text is tagged so screen readers pronounce it correctly.
5Extended variant codes 6
These 7-character codes are manufacturer-specific variants of P0263 and may be reported by some scan tools.
| Brand | Code | Description | System |
|---|---|---|---|
| Hyundai | P026300 | No description available | Powertrain |
| SsangYong | P026300 | Misfire detected on cylinder #1 Brand | Powertrain |
| SsangYong | P026301 | Injector #1 balancing fault(MDP condition dissatisfaction) Brand | Powertrain |
| SsangYong | P026302 | Injector #1 balancing fault(MDP condition bad) Brand | Powertrain |
| Mercedes-Benz | P026326 | Das Einlernen der Betriebsparameter für Zylinder 1 hat Funktionsstörung. Signaländerungsrate ist unterhalb des zulässigen Grenzwertes. Brand | Powertrain |
| Mercedes-Benz | P026327 | Das Einlernen der Betriebsparameter für Zylinder 1 hat Funktionsstörung. Signaländerungsrate ist oberhalb des zulässigen Grenzwertes. Brand | Powertrain |
6Related codes
Browse Pxxx codes or P026xx codes.