OBD Guide
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B165C

Park Lamp Control Circuit Low

B165C is an OBD-II diagnostic trouble code meaning: Park Lamp Control Circuit Low. Common causes: open or short circuit in wiring harness, faulty side light relay. Estimated repair cost: $11–56.

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$11–56 (est.)

Symptoms

  • Side lights don't work
  • Flashing side lights
  • Dashboard warning

Causes

  • Open or short circuit in wiring harness
  • Faulty side light relay
  • Problems with the control unit
  • Contact corrosion

How to Fix

  1. Check the wiring harness for breaks and short circuits
  2. Check side light relay
  3. Check the control unit for errors
  4. Clean contacts from corrosion

Related codes

B165DB165E

FAQ

What does the B165C code mean?

B165C is an OBD-II diagnostic trouble code that indicates: Park Lamp Control Circuit Low

What causes a B165C error code?

The most common causes of B165C include: Open or short circuit in wiring harness; Faulty side light relay; Problems with the control unit; Contact corrosion.

How do I fix a B165C diagnostic trouble code?

To fix B165C: Check the wiring harness for breaks and short circuits. Check side light relay. Check the control unit for errors. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B165C?

Limited driving only, diagnose soon

How much does it cost to fix B165C?

The estimated repair cost for B165C is $11–56. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat