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OBD Code B0131

A/V Sensor Washer Fluid C Control Circuit

CodeB0131
DescriptionA/V Sensor Washer Fluid C Control Circuit
SystemBody

What Does B0131 Mean?

A/V Sensor Washer Fluid C Control Circuit. This diagnostic trouble code (DTC) is stored when the vehicle's onboard computer detects an issue with the body.

Code Breakdown

B = Body code

0 = Generic (SAE standard)

How to Fix B0131

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

  1. Check wiper motor operation by applying 12V directly.
  2. Inspect the wiper control switch (stalk) and connector.
  3. Check the wiper relay and fuse.
  4. Test the wiper park switch (usually built into the motor).
  5. Inspect wiring for damage, especially where it passes through the firewall.
  6. Replace the wiper motor or switch as indicated.
  7. Clear codes and test all wiper speeds and intermittent settings.

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 B0131 serious?

B0131 is generally considered a low-severity code. While it should still be addressed, it is unlikely to cause immediate safety concerns. However, ignoring it long-term may lead to higher emissions or reduced fuel economy.

Can I clear B0131 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 B0131?

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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