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OBD Code P2068

Fuel Level Sensor B Circuit High Input

CodeP2068
DescriptionFuel Level Sensor B Circuit High Input
Possible CausesOpen circuit|Faulty sender B
SymptomsFuel gauge B reads full
SystemFuel System

What Does P2068 Mean?

Fuel Level Sensor B Circuit High Input. This diagnostic trouble code (DTC) is stored when the vehicle's onboard computer detects an issue with the fuel system.

Code Breakdown

P = Powertrain code

2 = Manufacturer-specific

How to Fix P2068

Follow these diagnostic steps to identify and resolve the issue. Always start with the simplest checks before moving to more involved repairs.

  1. Check the fuel level sender unit in the tank — often part of the fuel pump assembly.
  2. Inspect the fuel level sensor connector and wiring.
  3. Compare the gauge reading to the actual fuel level.
  4. The float or rheostat in the sender may be worn or stuck.
  5. Replace the fuel level sending unit if faulty.
  6. Clear codes and verify gauge accuracy.

Note: These are general diagnostic guidelines. Some vehicles may have model-specific procedures. Always consult your vehicle's service manual for exact specifications and torque values. If you are not comfortable performing these steps, visit a qualified mechanic.

Frequently Asked Questions

Is P2068 serious?

The severity depends on the underlying cause. Some triggers for P2068 are minor (like a loose gas cap), while others may indicate a more significant problem. We recommend having the code diagnosed with a proper scan tool to determine the exact cause before deciding on urgency.

Can I clear P2068 myself?

You can clear any OBD-II code with a code scanner or by disconnecting the battery for 15-30 minutes. However, clearing the code without fixing the underlying problem will cause it to return — usually within one or two drive cycles. If the code triggered the check engine light, the light will come back on. Fix the root cause first, then clear the code.

How much does it cost to fix P2068?

Repair costs vary widely depending on the root cause. Some fixes are free (like tightening a gas cap) while others can cost several hundred dollars (like replacing a catalytic converter or oxygen sensor). A proper diagnosis with a professional scan tool — not just reading the code — is the first step to getting an accurate repair estimate. Many auto parts stores offer free code reading, but a thorough diagnosis usually requires a mechanic.

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