• P0203 Nissan Qashqai

Peugeot P1228 Wastegate Failed Open (Under Pressure) Description. Injector Circuit Cylinder 3 Intermittent. Kia OBD-II Trouble Code Description for P1228 Peugeot. Fuel Injector 4 Circuit Low Voltage. Mercedes OBD-II Trouble Code Description for P1228 Peugeot. Yet unknown code on 1997 C 220 CDI. Mercedes OBD-II Trouble Code Description for. Engine cranking or running, then the PCM detected an open circuit, short-to-ground or short to power on circuit 406 (IC 2 and IC 3) P1353 Ignition Control Module Output High/Pulse Detected When Grounded Cylinder 3.

P0203 is a diagnostic trouble code (DTC) for 'Injector Circuit Malfunction - Cylinder 3'. This can happen for multiple reasons and a mechanic needs to diagnose the specific cause for this code to be triggered in your situation. Our certified mobile mechanics can come to your home or office to perform the for $79.99. Once we are able to diagnose the problem, you will be provided with an upfront quote for the recommended fix and receive $20.00 off as a credit towards the repair. All our repairs are backed by our 12-month / 12,000-mile warranty.

P0203 code definitionP0203 is a general OBD2 code that points to a fault in the injector circuit. Note: This code is similar to P0200, P0201, P0202, or P0204-P0212. Misfire codes and rich / lean codes may be seen in addition to P0203.What the P0203 code meansThe P0203 is a diagnostic trouble code that is set when the engine control module (ECM) has detected a fault in the injector circuit for cylinder 3. The ECM looks for a specific range of voltage and resistance from each injector circuit and when the results are found to be out-of-range, a diagnostic trouble code (DTC) will be set.Once the DTC is set, the car will enable a failsafe mode which prevents further damage to the vehicle. When a failsafe mode is set, it will remain until normal operation is detected or is repaired.

What causes the P0203 code?. An ECM that is faulty. Injector failing or failed in cylinder 3.

Open or short found in the wiring harness. Electrical connection that is poorWhat are the symptoms of the P0203 code?Symptoms vary from vehicle to vehicle but the constant is the Check Engine Light being illuminated once the fault is found. Other symptoms that may occur include:. Poor fuel mileage. Running poorly. Engine dying while running.

Lean or rich conditions. Engine misfiresHow does a mechanic diagnose the P0203 code?In all cases, the first step will be to check what codes present in the vehicle. A qualified technician will begin by installing an advanced scan tool and seeing what codes are found. Once the codes are found, the freeze frame data will be checked for what the vehicle was doing when the code was set. All codes will be cleared and taken for a test drive to verify the fault. When the fault is verified, a visual inspection will be performed on the injector circuit and the injector to look for any damage.Next, the voltage will be checked at the injector itself.

The scan tool will then be used to monitor injector operation. If all of this passes, a noid light will be installed into the wiring of the cylinder 3 injector to check for the proper voltage pulse.Lastly, the ECM will be tested according to the manufacturer's specifications. Common mistakes when diagnosing the P0203 codeCommonly, mistakes are made when steps are not followed or entire systems are not tested. To avoid wasting time and money only to not fix the fault, all steps should be followed in the proper order.

Usually the injector is the cause for P0203, but it must be tested before it is replaced. How serious is the P0203 code?With P0203, if the vehicle is running poorly and is having trouble staying running, then this is a serious condition which calls for the vehicle not to be driven, and the code to be repaired as soon as possible.

In much less serious cases, the only felt symptom is the Check Engine Light being turned on. What repairs can fix the P0203 code?. Repair or replacement of wiring harness. Connection issues fixedAdditional comments for consideration regarding the P0203 codeSpecialty tools may be needed to properly diagnose P0203, such as an advanced scan tool. These advanced scan tools let technicians view much more information than just the code, such as live action data and the ability to view injector operation data.Another tool that may be needed is a noid light set.

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These are tools that give the technician more data than just if voltage is present. When diagnosing injectors, an important aspect is the pulse of voltage that operates the injector. Noid lights are used to determine proper pulse time. Need help with a P0203 code?YourMechanic offers certified mobile mechanics who will come to your home or office to diagnose and repair your vehicle.

Or speak to a service advisor at 1-800-701-6230.

GM Trouble Codes - Check Engine Light CodesWelcome to the GM Trouble Codes and Check Engine Light codes page. Below you will find the most complete list of GM trouble codes available. The code definitions are a good starting point when determining the cause of the service engine light but where do you go from there?

We have a large number of resources to help you repair the problem. Here is how we suggest you proceed.

Look up your code definition. This tells you where to start testing. If you are unsure of any abbreviations, check out the acronym list by clicking on the link at the left.Next, read our article, and if there is an article related to the system you are testing, such as Oxygen Sensors or EGR concerns, read these as well. They will provide valuable info! If there is a link to a specific diagnosis strategy for the code then follow that and start testing. If there is no procedure for your manufacturer specific code, then I suggest referring to a similar generic OBD II code (these are listed numerically by system type) to get a good idea of what to look for. If at this point you still need assistance use the 'Get Help' link and let us know how we can help.

We can provide information on component location, specifications, circuit color/location and more. We do ask that you please read the info available on the site first so that we can help reduce repeat questions. So please read our and when you're ready jump in! Also, we value your feedback and like to hear stories of unusual fixes or concerns you may have run into with your Check Engine Light, so feel free to share your experiences by using the 'Contact Us' link. Let's go!We do our best to update these GM trouble codes as frequently as possible.

If you find one missing let us know and we we'll add it immediately! Please use the form on our Contact Page to get in touch with us. We certainly understand how frustrating it can be to look for a code definition and have it not online when you need it.

And lets face it, if the service engine light is on then you need it now! It's easiest to use the 'Find On This Page' feature of your browser's 'Edit' menu to find codes on this page as the list is quite long. These are listed in numerical order for easy searching.When retrieving GM trouble codes with an OBD II scan tool, proceed as follows:1. Connect scan tool to the 16-pin data link connector (DLC) located underneath the steering column.

P0203 Nissan Qashqai

The connector may have a removable cover.2. Turn the ignition on.3. Follow scan tool manufacturer's operating instructions to access the Diagnostic Trouble Codes (DTC's).Remember, these are manufacturer specific codes only.