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Engine-Codes – BMW – P1408 BMW

P1408 BMW Code - Tank Fill Level Left Signal

Quick Answer

The P1408 code for BMW vehicles indicates an issue with the tank fill level left signal. Common causes include Faulty fuel level sensor, Wiring or connection issues in the fuel level sensor circuit, Corrosion or damage to the sensor. 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
P1408 BMW indicates Tank Fill Level Left Signal.
Common causes
Common causes include Faulty fuel level sensor, Wiring or connection issues in the fuel level sensor circuit, Corrosion or damage to the sensor.
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 25, 2024
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Code P1408 BMW Description

The P1408 code for BMW vehicles indicates an issue with the tank fill level left signal. This means that there is a problem with the sensor or circuitry responsible for monitoring the fuel level in the left side of the tank. This can cause inaccuracies in the fuel gauge readings and potentially lead to running out of fuel unexpectedly. Additionally, it may affect the vehicle's emissions system, as the fuel level sensor is crucial for proper emission control.

OBDII Code P1408 BMW - Tank Fill Level Left Signal
P1408 BMW Code - Tank Fill Level Left Signal

Common Causes of P1408 BMW

  1. Faulty fuel level sensor
  2. Wiring or connection issues in the fuel level sensor circuit
  3. Corrosion or damage to the sensor
  4. Fuel pump malfunction
  5. Electrical problems in the vehicle's system

Symptoms of P1408 BMW

  1. Inaccurate fuel gauge readings
  2. Check Engine Light illuminated
  3. Fuel level fluctuations while driving
  4. Difficulty starting the vehicle
  5. Reduced fuel efficiency

How to Fix P1408 BMW

  1. Diagnose the issue using a diagnostic scanner to confirm the P1408 code and pinpoint the exact cause.
  2. Inspect the fuel level sensor and its connections for any damage or corrosion.
  3. Replace the faulty fuel level sensor if needed.
  4. Check and repair any wiring or electrical issues in the circuit.
  5. Clear the code, reset the vehicle's computer, and test to ensure the problem is resolved.

Cost to Fix P1408 BMW

The cost of repairing a P1408 code for BMW vehicles can vary depending on the specific cause of the issue. On average, the repair cost can range from $150 to $400, including parts and labor. However, prices can fluctuate based on the location, dealership or independent shop rates, and the need for any additional repairs. It's recommended to consult with a professional mechanic for a more accurate estimate.

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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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