P0203
Injector Circuit Malfunction - Cylinder 3
DTC P0203, sometimes indicated as P020300 is an OBD diagnostic trouble code indicating a generic fault with the vehicle powertrain (i.e. engine and gearbox). This code identifies an error with the air/fuel mixture causing injector circuit malfunction - cylinder 3.
There are a few things that could cause this code: a bad injector, a bad wiring harness, a bad PCM, or a dirty injector.
If you think it might be a bad injector, you can test it by disconnecting the injector connector and checking for voltage at the connector. If you have voltage, then the injector is bad. If you don't have voltage, then the wiring or PCM is bad.
If you think it might be a bad wiring harness, you can test it by disconnecting the wiring harness connector and checking for voltage at the connector. If you have voltage, then the wiring harness is bad. If you don't have voltage, then the injector or PCM is bad.
If you think it might be a bad PCM, you can test it by disconnecting the PCM connector and checking for voltage at the connector. If you have voltage, then the PCM is bad. If you don't have voltage, then the wiring or injector is bad.
If you think it might be a dirty injector, you can test it by disconnecting the injector connector and checking
- P0203: Injector Circuit Malfunction - Cylinder 3
- P0203: Injector Circuit/Open - Cylinder 3
- P0203: Injector Circuit Open Cylinder 3
- P0203: Injector 3 – circuit malfunction
- P0203 00: Damage to the cylinder 3 injector circuit
- P0203 00: Injector 3 - circuit malfunction
See Also: Related Error Codes
Bulletins are notices put out by manufacturers in conjunction with the NHTSA to notify the public of manufacturing issues or changes.
- TT 01-20-02_3 - FUEL SYSTEM, OTHER
VOLKSWAGEN: T8 fuel injector harness inspection for stored dtcs P0201, P0202, P0203, P0204. - 22-NA-087 - ENGINE AND ENGINE COOLING
CHEVROLET: This technical bulletin provides a procedure to replace the fuel injector and the wiring harness to correct a customer concern of malfunction indicator lamp (mil) illuminated with dtc P0201, P0202, P0203, P0204, P0205, P0206 and/or P0216 se - 22-NA-087 - ENGINE AND ENGINE COOLING
CHEVROLET: This technical bulletin provides a procedure to replace the fuel injector and the wiring harness to correct a customer concern of malfunction indicator lamp (mil) illuminated with dtc P0201, P0202, P0203, P0204, P0205, P0206 and/or P0216 se - 9002688 - WHEELS
RAM: 68069384a$, r8069384a$, 68086182a$, r8027067a$, rl002012a$ - gasket, cylinder head cover before replacing injectors for diagnostic trouble codes P0201, P0202, P0203, P0204, P0205, and/or P0206, please make sure that the wiring loom and/or - 22-NA-087 - ENGINE AND ENGINE COOLING
CHEVROLET: This technical bulletin provides a procedure to replace the fuel injector and the wiring harness to correct a customer concern of malfunction indicator lamp (mil) illuminated with dtc P0201, P0202, P0203, P0204, P0205, P0206 and/or P0216 se - 22-NA-087 - ELECTRICAL SYSTEM
CHEVROLET: This technical bulletin provides a procedure to replace the fuel injector and the wiring harness to correct a customer concern of malfunction indicator lamp (mil) illuminated with dtc P0201, P0202, P0203, P0204, P0205, P0206 and/or P0216 se - 22-NA-087 - ENGINE (PWS)
CHEVROLET: This technical bulletin provides a procedure to replace the fuel injector and the wiring harness to correct a customer concern of malfunction indicator lamp (mil) illuminated with dtc P0201, P0202, P0203, P0204, P0205, P0206 and/or P0216 se - PIT5751C - ELECTRICAL SYSTEM
CHEVROLET: This preliminary information communicates and issue with the ses mil on setting dtc'sP0201/P0202/P0203/P0204/P0205/P0206/P0216 and instructing dealership to inspect the engine wiring harness for damage. - 01-004-17 - ENGINE (PWS)
MAZDA: Multi-model - engine runs rough and check engine light on with dtcs P0201 and P0204 or P0202 and P0203 - PIT5751C - ELECTRICAL SYSTEM:WIRING
CHEVROLET: This preliminary information communicates and issue with the ses mil on setting dtc'sP0201/P0202/P0203/P0204/P0205/P0206/P0216 and instructing dealership to inspect the engine wiring harness for damage. - PIT5751B - ENGINE (PWS)
CHEVROLET: This preliminary information communicates and issue with the ses mil on setting dtc'sP0201/P0202/P0203/P0204/P0205/P0206/P0216 and instructing dealership to inspect the engine wiring harness for damage. - PIT5751A - ENGINE (PWS)
CHEVROLET: This preliminary information communicates and issue with the ses mil on setting dtc'sP0201/P0202/P0203/P0204/P0205/P0206/P0216 and instructing dealership to inspect the engine wiring harness for damage. - PIT5751 - ENGINE (PWS)
CHEVROLET: This preliminary information communicates and issue with the ses mil on setting dtc'sP0201/P0202/P0203/P0204/P0205/P0206/P0216 and instructing dealership to inspect the engine wiring harness for damage. - VIN4APIN20190923 - EQUIPMENT
VOLKSWAGEN: Customer states mil-on with P1429 and/or P0556 customer states mil-on with P0133 customer states mil-on with P0116 customer states mil-on one or more of P0201 P0202 P0203 P0204 in the ecm customer states the rear lift gate has rust or c - 9002688 - ENGINE AND ENGINE COOLING
RAM: 68069384a$, r8069384a$, 68086182a$, r8027067a$, rl002012a$ - gasket, cylinder head cover before replacing injectors for diagnostic trouble codes P0201, P0202, P0203, P0204, P0205, and/or P0206, please make sure that the wiring loom and/or - 9002688 - ENGINE AND ENGINE COOLING
DODGE: 68069384a$, r8069384a$, 68086182a$, r8027067a$, rl002012a$ - gasket, cylinder head cover before replacing injectors for diagnostic trouble codes P0201, P0202, P0203, P0204, P0205, and/or P0206, please make sure that the wiring loom and/or - 9002688 - ELECTRICAL SYSTEM
DODGE: 68069384a$, r8069384a$, 68086182a$, r8027067a$, rl002012a$ - gasket, cylinder head cover before replacing injectors for diagnostic trouble codes P0201, P0202, P0203, P0204, P0205, and/or P0206, please make sure that the wiring loom and/or - 01-004-17-3317a - EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
MAZDA: Some vehicles may experience an engine that runs rough and the check engine light on with dtcs P0201 and P0204 or P0202 and P0203. Note: engine misfire related dtcs (P0301, P0302, P0303, P0304) are usually stored at the same time. P0201:00 - PIP4924C - FUEL SYSTEM, GASOLINE
CHEVROLET: This preliminary information communication provides information to the technician about vehicles that have service engine soon malfunction indicator lamp on and a misfire. Technician may find diagnostic trouble codes P0201, P0202, P0203, p0 - PIP4924D - ENGINE (PWS)
CHEVROLET: This preliminary information communication provides information to the technician about vehicles that have service engine soon malfunction indicator lamp on and a misfire. Technician may find diagnostic trouble codes P0201, P0202, P0203, p0 - 01-017-16-3242 - ENGINE (PWS)
MAZDA: Some vehicles may experience an engine that runs rough and the check engine light on with dtcs P0201 and P0204 or P0202 and P0203.Note:engine misfire related dtcs (P0301, P0302, P0303, P0304) are usually stored at the same time.P0201:00: fu - 19620 - ENGINE AND ENGINE COOLING:ENGINE
FORD: Injector circuit open codes P0201, P0202, P0203, P0204, P0205, P0206, P0207, P0208 with a misfire / rough running / lack of power condition. *kb - 060604026 - ENGINE AND ENGINE COOLING:ENGINE
CHEVROLET: Intermittent ses/mil lamp illuminated, reduced engine power, fuel injector driver circuit. Dtc's P0201, P0202, P0203, P0204, P0205, P0206, P0207, P0208. Cylinder bank shut down dtc's P2146, or P2149. *kb - 060604054 - ENGINE AND ENGINE COOLING:ENGINE
PONTIAC: Turbo engine misfire, ses/mil, dtc's P0300, P0301, P0302, P0303, P0304, P0193, P0201, P0202, P0203, and/or P0204. *kb - 19056 - ENGINE AND ENGINE COOLING:ENGINE
FORD: Mil on/rough running - mutiple dtcs -0201, P0202, P0203 or P0204 present in the powertrain control module (pcm). *tt - 980298T02 - ELECTRICAL SYSTEM
SATURN: Saturns built up to and including vin wz174921 may exhibit dtcs P0201, P0202, P0203, P0204, P0443, P0449, P1691, P1693 with an extended cranking time and / or start then stall. *tt
2018 FORD ESCAPE
At 62,000 miles transmission had to be replaced at my expense now at 75,000miles misfire on cylinder 3 code P0203 still waiting to be fixed then over heat warning light would come on and then go off while driving
ENGINE, POWER TRAIN
2018 VOLKSWAGEN TIGUAN with 32000.0 miles
On multiple occasions, subject vehicle displayed check engine light and epc light at random intervals, causing car to unexpectedly be limited to 4,000 rpm and unable to accelerate past 40mph. As a result, this put driver in extremely unsafe situations and endangered safety of passengers and fellow drivers, particularly on highway. First encountered at 34,000 miles on odometer. Persisted through 41,000 miles. Seconds before error is encountered, vehicle would run rough and undergo rough shifts. In addition, vehicle also suffered with sluggish acceleration from stop. Vehicle taken to service center multiple occasions. On first encounter, technician instructed simply to reset vehicle. When taken second time, code P0203 injector short circuit cyl 3 was diagnosed and engine harness replaced. However, issue continued. When taken third time, injector harness replaced.
POWER TRAIN, ENGINE ELECTRICAL SYSTEM ENGINE POWER TRAIN
2011 CHEVROLET MALIBU with 55000.0 miles
While driving my 2011 chevy Malibu a service esc service traction message came on then it says esc off traction control off. This happened one time & after car was turned off & started again, problem didn't occur again until a couple months later. Then the message then was coming on almost everytime i drove the vehicle, & when the message was on the car would spit & sputter.Trok it into the local shop they replaced the traction control sensor. This helped for a couple months, problem then occurred again, took back into shop they replaced the camphasors, this helped for a couple months. Then vehicle became undriveable: rpms would drop to zero, car would loose all power while driving would need to shut car off & start again, spitting & sputtering of the engine & loosing power. Took vehicle in they tested it and it ran codes P0300,P0204,P0203,P0202 & P0201 they contacted gm who recommended replacing the ecm. Replaced ecm. A week later service esc/service traction message is now appearing off and on again. Car will spit & sputter when message is on. This issue has been going on for over a year & no one can tell me how to fix it??? I can not afford to have my vehicle in the shop every week with the mechanics guessing as to what will fix this. There are many of these complaints out there & gm can not tell me how to fix this issue. I am now back to square one. I have a 4 year old vehicle that does not even have 100,000 miles on it and i can not trust it to take it anywhere. This issue needs to be resolved before someone gets hurt, very unsafe to have a vehicle spit & sputter randomly & loose all power driving down the road! Very unimpressed with gm & my gm vehicle, will never own another gm vehicle again.
ELECTRONIC STABILITY CONTROL,
2010 FORD FUSION with 5970.0 miles
As i was passing another vehicle, the vehicle lost power and a warning light illuminated telling me to pull over immediately. Luckily i was able to make it to the side of the highway. The codes pulled were P0010, P0201, P0202, P0203, P0204. The dealer checked the electrical connections and reassembled. The issue happened again on 5/30/11 as i was driving on the highway. The same codes as the first incident was found with an additional code of P1A03. Again the dealer checked the electrical connections and reassembled. I feel this is a safety issue because when you are driving along on the highway the cars around you do not expect you to dramatically slow down. If you manage to safely make it to the side of the road without being in an accident or causing an accident you still face another safety issue being stuck on the side of the road with traffic going by at 65 mph.
UNKNOWN OR OTHER, ELECTRICAL SYSTEM