P2069 OBD-II Trouble Code: Fuel Level Sensor B Circuit Intermittent

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P2069 is a diagnostic trouble code (DTC) for "Fuel Level Sensor B Circuit Intermittent". 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 Check Engine Light diagnostic for $70.00. Once we are able to diagnose the problem, you will be provided with an upfront quote for the recommended fix and receive $30.00 off as a credit towards the repair. All our repairs are backed by our 12-month / 12,000-mile warranty.

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Check Engine Light

P2069 code definition

Fuel Level Sensor B Circuit Intermittent

What the P2069 code means

P2069 is an OBD-II generic code for the engine control module (ECM) detecting the fuel level sensor B signal is intermittent. The sensor output voltage is not steady or goes away and comes back when compared to the fuel level sensor A.

What causes the P2069 code?

  • The ECM uses fuel level sensors A and B output voltages to determine the vehicle's fuel control. The two fuel senders are used on vehicles that have a dual bladder or dual sump fuel tank.

  • The sensor does not give any voltage signal at times indicating the fuel sensor is intermittently having a problem sending a signal.

What are the symptoms of the P2069 code?

  • The Check Engine Light may be illuminated and the code set in ECM memory as a fault.

  • The fuel system may not reflect how much fuel is in the fuel tank.

  • The vehicle may run out of fuel if the fuel tank sensor is not giving a signal voltage and the vehicle runs out of fuel.

How does a mechanic diagnose the P2069 code?

  • Scans for codes and documents the codes in the ECM; looks at the freeze frame data for failure.

  • Checks the sensor A and B to compare the readings for fuel level and compares it to actual fuel level.

  • Checks the fuel level sensor B for the proper resistance with a multimeter.

  • Checks the wire connections for loose or corroded pins.

  • Follows the manufacturer pinpoint tests for the diagnosis and replacement of the fuel level sensor B.

Common mistakes when diagnosing the P2069 code?

  • Clearing ECM memory codes before checking the freeze frame data for the main failure problem, so the failure may be duplicated and repaired.

  • Failing to clear the ECM codes after the codes are fixed so the ECM will enable the system to normal again.

  • Replacing the fuel level sensor without first checking the wire connections for corrosion or loose pins.

How serious is the P2069 code?

Code P2069 is a code letting the operator know the fuel level sensor B is not working intermittently and may affect the amount of fuel available to the engine and cause the fuel gauge to become erratic and not trusting it to be accurate.

What repairs can fix the P2069 code?

  • Replacing the fuel pump sending unit B.
  • Repairing the connector pins of corrosion or loose connections at the fuel pump on the fuel tank.

Additional comments for consideration regarding the P2069 code

Code P2069 is for an intermittent problem with the fuel level sensor B and vehicles that use this second sensor to control the transfer pump to keep the tank side to side level and may cause unequal fuel levels in the two sides of the fuel tank. Keep this in mind when diagnosing the code and look at other codes that may also be present.

Need help with a P2069 code?

YourMechanic offers certified mobile mechanics who will come to your home or office to diagnose and repair your vehicle. Get a quote and book an appointment online or speak to a service advisor at 1-800-701-6230.

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