OBD Guide
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B25C7

Driver Door Ajar Switch 2 Circuit Low

B25C7 is an OBD-II diagnostic trouble code meaning: Driver Door Ajar Switch 2 Circuit Low. Common causes: door open switch malfunction, open or shorted wiring harness. Estimated repair cost: $22–56.

Severity
✅ Low
Can you drive?
Do not drive — repair immediately
Approx. repair cost
$22–56 (est.)

Symptoms

  • False alarms
  • Incorrect operation of interior lighting
  • No signal on the instrument panel about an open door

Causes

  • Door open switch malfunction
  • Open or shorted wiring harness
  • Oxidized or damaged connectors
  • Problems with the control unit

How to Fix

  1. Visual inspection of the wiring harness and connectors
  2. Checking the door switch resistance
  3. Checking the voltage in the circuit
  4. Switch replacement or wiring harness repair

FAQ

What does the B25C7 code mean?

B25C7 is an OBD-II diagnostic trouble code that indicates: Driver Door Ajar Switch 2 Circuit Low

What causes a B25C7 error code?

The most common causes of B25C7 include: Door open switch malfunction; Open or shorted wiring harness; Oxidized or damaged connectors; Problems with the control unit.

How do I fix a B25C7 diagnostic trouble code?

To fix B25C7: Visual inspection of the wiring harness and connectors. Checking the door switch resistance. Checking the voltage in the circuit. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B25C7?

Do not drive — repair immediately

How much does it cost to fix B25C7?

The estimated repair cost for B25C7 is $22–56. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat