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Engine-Codes – Generic – P1202

P1202 Code - Fuel System Failure Caused No. 2 Cylinder Misfire

Quick Answer

The diagnostic trouble code P1202 indicates a fuel system failure that has caused a misfire in the No. Common causes include Faulty fuel injector in the No, 2 cylinder, Clogged fuel filter restricting fuel flow. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means
P1202 indicates Fuel System Failure Caused No. 2 Cylinder Misfire.
Common causes
Common causes include Faulty fuel injector in the No, 2 cylinder, Clogged fuel filter restricting fuel flow.
Severity
High - diagnose this code as soon as possible.
Can I drive?
Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
What is this?
Table of contents Created and updated by William Orellana on Aug 30, 2024
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Code P1202 Description

The diagnostic trouble code P1202 indicates a fuel system failure that has caused a misfire in the No. 2 cylinder of the vehicle's engine. This means that there is a problem with the fuel delivery to the second cylinder, leading to a lack of combustion or incomplete combustion, resulting in a misfire. This issue can impact the vehicle's performance by causing rough idling, decreased power, poor fuel efficiency, and potentially even engine stalling. If left unaddressed, it can lead to further damage to the engine components and potentially even catalytic converter failure.

OBDII Code P1202 - Fuel System Failure Caused No. 2 Cylinder Misfire
P1202 Code - Fuel System Failure Caused No. 2 Cylinder Misfire

Common Causes of P1202

  1. Faulty fuel injector in the No. 2 cylinder
  2. Clogged fuel filter restricting fuel flow
  3. Fuel pressure regulator malfunction
  4. Ignition system issues affecting the No. 2 cylinder
  5. Vacuum leak affecting fuel delivery to the No. 2 cylinder

Symptoms of P1202

  1. Rough idling
  2. Decreased engine power
  3. Poor fuel efficiency
  4. Engine stalling
  5. Check engine light illuminated

How to Fix P1202

  1. Diagnose the specific cause of the fuel system failure and misfire in the No. 2 cylinder through a thorough inspection and testing.
  2. Replace the faulty fuel injector in the No. 2 cylinder or clean it if possible.
  3. Check and replace the fuel filter if it is clogged.
  4. Test and potentially replace the fuel pressure regulator if found to be malfunctioning.
  5. Inspect and repair any ignition system components affecting the No. 2 cylinder, such as spark plugs or ignition coils.

Cost to Fix P1202

The typical repair costs for addressing a fuel system failure causing a No. 2 cylinder misfire can range from $200 to $800, depending on the specific cause of the issue and the labor involved. It's important to note that diagnosis time and labor rates can vary, so it's advisable to check with local auto repair shops for a more accurate estimate.

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Code P1202 Information for Specific Makes

About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

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