Engine-CodesCadillac – P1200 Cadillac

P1200 Cadillac Code - Fuel Level Sensor 1 Signal Message Counter Incorrect

Quick Answer

The P1200 Cadillac code indicates a problem with the Fuel Level Sensor 1 signal message counter being incorrect. Common causes include Faulty fuel level sensor, Wiring issues in the sensor circuit, Corrosion or damage to the sensor connectors. 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
P1200 Cadillac indicates Fuel Level Sensor 1 Signal Message Counter Incorrect.
Common causes
Common causes include Faulty fuel level sensor, Wiring issues in the sensor circuit, Corrosion or damage to the sensor connectors.
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.
Table of contents Created and updated by William Orellana on Sep 10, 2024
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Code P1200 Cadillac Description

The P1200 Cadillac code indicates a problem with the Fuel Level Sensor 1 signal message counter being incorrect. The fuel level sensor is responsible for measuring the amount of fuel in the tank and sending this information to the vehicle's computer system. The signal message counter is used to keep track of the number of signals being sent by the sensor. When this counter is incorrect, it can lead to inaccuracies in the fuel level readings displayed on the dashboard.

OBDII Code P1200 Cadillac - Fuel Level Sensor 1 Signal Message Counter Incorrect
P1200 Cadillac Code - Fuel Level Sensor 1 Signal Message Counter Incorrect

Common Causes of P1200 Cadillac

  1. Faulty fuel level sensor
  2. Wiring issues in the sensor circuit
  3. Corrosion or damage to the sensor connectors
  4. Faulty vehicle's computer system
  5. Issues with the fuel pump or fuel injectors

Symptoms of P1200 Cadillac

  1. Inaccurate fuel level readings on the dashboard
  2. Fluctuating fuel gauge readings
  3. Engine stalling due to running out of fuel unexpectedly
  4. Poor fuel efficiency
  5. Check Engine Light illuminated on the dashboard

How to Fix P1200 Cadillac

  1. Diagnose the exact cause of the P1200 code using a diagnostic scanner
  2. Inspect the fuel level sensor and its wiring for any damage or corrosion
  3. Test the sensor's resistance and voltage to ensure it is functioning properly
  4. Replace the fuel level sensor if it is found to be faulty
  5. Clear the code from the vehicle's computer system and test drive the vehicle to ensure the issue is resolved

Cost to Fix P1200 Cadillac

The typical repair costs for addressing the P1200 Cadillac code can vary depending on the exact cause of the issue. In general, replacing a faulty fuel level sensor can cost between $150 to $300, including parts and labor. However, if the issue is more complex and involves additional components or wiring repairs, the cost could be higher. It is advisable to consult with a professional mechanic to get an accurate estimate based on the specific diagnosis and repair needed for your vehicle. Keep in mind that labor rates and part prices can vary based on location, vehicle make and model, and the type of engine.

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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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