PowertrainP0203
CautionSeverity: Caution - get it checked when you can
Injector Circuit - Cylinder 3
Key terms: Control module: a small computer that runs one part of the car · SAE J2012: the standard generic code list · Powertrain: engine, transmission and emissions
1What it means in plain English
The engine computer cannot drive the fuel injector for cylinder 3 properly, so that cylinder may not get enough fuel.
2Common causes
- Faulty fuel injector
- Damaged injector wiring or connector
- Blown injector fuse
- Corroded connector pins
- Engine control module fault
3Can I drive?
Caution · drive with care
The engine may misfire or run rough. Drive gently to a workshop; if the check-engine light is flashing, stop and have the car towed.
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 44
| Brand | Code | Description | System |
|---|---|---|---|
| Ashok Leyland CV | P0203 | Injector Circuit - Cylinder 3 SAE | Powertrain |
| BAIC Motor | P0203 | Injector C diagnostic Brand | Powertrain |
| Mercedes-Benz | P0203 | Injector Circuit - Cylinder 3 SAE | Powertrain |
| BMW | P0203 | Open circuit Brand | Powertrain |
| BYD | P0203 | 3#Nozzle fault Brand | Powertrain |
| Chery | P0203 | Cylinder 3 Brand | Powertrain |
| Chrysler | P0203 | Fuel injector 3 circuit short to ground Brand | Powertrain |
| Daewoo | P0203 | Injector 3 control circuit Brand | Powertrain |
| Daihatsu | P0203 | EDU abnormal #3 Brand | Powertrain |
| DFFS | P0203 | Injector 3 control fault Brand | Powertrain |
| DFFX | P0203 | Injector circuit-cylinder 3 Brand | Powertrain |
| DFXK | P0203 | Injector Circuit/Open Cylinder 3 Brand | Powertrain |
| EOBD | P0203 | Cilj 3, injektor 'A', vezje Brand | Powertrain |
| Ford | P0203 | Injector Circuit - Cylinder 3 SAE | Powertrain |
| Geely | P0203 | Cylinder 3 Injector Fault Brand | Powertrain |
| GM | P0203 | Injector 3 control circuit Brand | Powertrain |
| Great Wall | P0203 | Injector C fault Brand | Powertrain |
| Hafei | P0203 | Injector circuit-cylinder 3 Brand | Powertrain |
| Holden | P0203 | Cylinder 3 Injector Control Circuit Brand | Powertrain |
| Honda | P0203 | Injector Circuit - Cylinder 3 SAE | Powertrain |
| Hyundai | P0203 | Injector Circuit - Cylinder 3 SAE | Powertrain |
| Isuzu | P0203 | Injector Circuit - Cylinder 3 SAE | Powertrain |
| Land Rover | P0203 | Injector circuit fault Brand | Powertrain |
| Mahindra | P0203 | Injector Circuit - Cylinder 3 SAE | Powertrain |
| Maserati | P0203 | Fuel injector 3 circuit open Brand | Powertrain |
| Mazda | P0203 | Injector Circuit - Cylinder 3 SAE | Powertrain |
| Mitsubishi | P0203 | No.3 injector system Brand | Powertrain |
| Nissan | P0203 | Injector circuit Brand | Powertrain |
| Opel | P0203 | Injector Circuit - Cylinder 3 SAE | Powertrain |
| Perodua | P0203 | EDU abnormal #3 Brand | Powertrain |
| Peugeot | P0203 | Injector Circuit - Cylinder 3 SAE | Powertrain |
| Porsche | P0203 | Injector Circuit - Cylinder 3 SAE | Powertrain |
| Proton | P0203 | No.3 injector system Brand | Powertrain |
| Renault | P0203 | Injector Circuit - Cylinder 3 SAE | Powertrain |
| Saab | P0203 | Injector 3 Control Circuit Brand | Powertrain |
| MG (SAIC) | P0203 | Cylinder 3- Injector Circuit Brand | Powertrain |
| Smart | P0203 | Injector Circuit - Cylinder 3 SAE | Powertrain |
| Sprinter | P0203 | Injector Circuit - Cylinder 3 SAE | Powertrain |
| Subaru | P0203 | Injector Circuit - Cylinder 3 SAE | Powertrain |
| Suzuki | P0203 | Injector Circuit / Open – Cylinder 4 Brand | Powertrain |
| SWM Motor | P0203 | Cylinder 3 injector control circuit open Brand | Powertrain |
| Tata | P0203 | Fuel Injector 2 Fault Brand | Powertrain |
| Toyota | P0203 | Cylinder 3 fuel injector circuit open Brand | Powertrain |
| Volkswagen | P0203 | Injector: cylinder 3 (N32): circuit malfunction; Open circuit 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 12
These 7-character codes are manufacturer-specific variants of P0203 and may be reported by some scan tools.
| Brand | Code | Description | System |
|---|---|---|---|
| Mercedes-Benz | P020300 | Der Kraftstoffinjektor (Zylinder 3) hat einen elektrischen Fehler oder Unterbrechung. Brand | Powertrain |
| Hyundai | P020300 | No description available | Powertrain |
| SsangYong | P020300 | Cylinder injector 3 circuit error Brand | Powertrain |
| Mercedes-Benz | P020301 | The fuel injector (cylinder 3) has an electrical fault or an open circuit. There is a general electrical fault. Brand | Powertrain |
| Sprinter | P020301 | Der Kraftstoffinjektor (Zylinder 3) hat einen elektrischen Fehler oder Unterbrechung. Es liegt ein allgemeiner elektrischer Fehler vor. Brand | Powertrain |
| Mercedes-Benz | P020311 | The fuel injector (cylinder 3) has an electrical fault or an open circuit. There is a short circuit to ground. Brand | Powertrain |
| Mercedes-Benz | P020313 | The fuel injector (cylinder 3) has an electrical fault or an open circuit. There is an open circuit. Brand | Powertrain |
| Sprinter | P020313 | Der Kraftstoffinjektor (Zylinder 3) hat einen elektrischen Fehler oder Unterbrechung. Es liegt eine Unterbrechung vor. Brand | Powertrain |
| Mercedes-Benz | P020319 | The fuel injector (cylinder 3) has an electrical fault or an open circuit. The limit value for current has been exceeded. Brand | Powertrain |
| Mercedes-Benz | P02031F | The fuel injector (cylinder 3) has an electrical fault or an open circuit. There is a sporadic fault. Brand | Powertrain |
| Mercedes-Benz | P020349 | The fuel injector (cylinder 3) has an electrical fault or an open circuit. There is an internal electrical fault. Brand | Powertrain |
| Mercedes-Benz | P020392 | The fuel injector (cylinder 3) has an electrical fault or an open circuit. The function or the instruction is faulty. Brand | Powertrain |
6Related codes
Browse Pxxx codes or P020xx codes.