If your car is showing the P0201 code, there is a problem with your #1 fuel injector circuit. This code will cause driveability issues and should be fixed promptly to keep your car moving forward.

Diagnostic trouble codes (DTC) can help you identify and solve a problem in your car’s engine. If you have an OBD (On-Board Diagnostic) reader, it’s essential to understand the meaning of the DTC, before you attempt to fix the issue.

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What does the engine code P0420 mean?

Definition: Injector circuit malfunction cylinder 1

The P0201 engine code indicates an issue with your car’s #1 fuel injector. From a broken wire, loose terminal to a burned-out injector coil, there is a circuit issue that is interrupting the connection between your powertrain control module and the #1 fuel injector.

How much will it cost to fix?

If you’ve diagnosed your P0201 code and you need to repair or replace the #1 fuel injector, the final price will depend on diagnosis time and labor rates. Most auto repair shops will charge between $75 and $150 per hour, but this rate will vary by location, your vehicle’s make and model, and engine type.

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What can cause the P0201 engine code?

If your car is showing the P0201 engine code, then it’s likely a faulty #1 fuel injector. The fuel injector harness may be open, shorted, or there is a poor electrical circuit connection in your car’s powertrain control module.

Common symptoms of the P0201 engine code

You’ll notice the symptoms accompanying this engine code immediately. Not only will the check engine light be on, but you’ll notice driveability issues including:

Engine misfire

Poor acceleration and lack of power

Decreased fuel economy

You may notice your car may run poorly, have trouble starting, or die altogether.

How serious is the P0201 engine code?

The P0201 engine code indicates a problem with your #1 fuel injector, which is an important component that keeps your car running.

The #1 fuel injector is responsible for delivering fuel and air to the appropriate cylinders in your engine. When the #1 fuel injector is clogged or not operating properly, your engine won’t receive the necessary combination of air and fuel and it may die.

If your car is showing the P0201 engine code, you should have your car diagnosed and repaired immediately.

Can I fix the P0201 engine code myself?

You’ll want to properly diagnose the engine code before you try and fix it at home. To diagnose the P0201 engine code you’ll want to inspect the wiring harness and connectors, check for damaged components, and look for broken, bent, pushed out, or corroded connectors’ pins.

Depending on the source of the problem you may need to repair or replace:

Cylinder #1 fuel injector

Engine control module

Repair or replace wiring issues

Fix poor connection faults

Because the P0201 engine code deals with components that are essential to making your car run, it’s recommended you take your car to a professional for further diagnostic inspection, repairs, and replacement.

Replacing the #1 fuel injector

If you’ve properly diagnosed the source of the P0201 engine code, and you decide to replace the fuel injector yourself, you’ll need to:

Disconnect the car’s battery before you begin any repairs

Remove the air cleaner element from the top of the throttle body

Pull out the injectors from the throttle body and clean it with a non-abrasive cleaner

Unscrew the mounting bolts that secure the fuel rail onto the engine

Remove the fuel rail and pry off the injectors

Install new injectors into the throttle body

After you install your #1 fuel injector, check your car for leaks, test drive it, monitor the dashboard for the fuel level, and check for the

engine warning light

to appear.

MORE:

What does the check engine light mean?

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