OBD Guide
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B2177

Interior Scanning Sensor Circuit Failure

B2177 is an OBD-II diagnostic trouble code meaning: Interior Scanning Sensor Circuit Failure. Common causes: open or short circuit in the sensor circuit, interior scanning sensor malfunction. Estimated repair cost: $56–167.

Severity
⚠️ Medium
Can you drive?
Do not drive — repair immediately
Approx. repair cost
$56–167 (est.)

Symptoms

  • The security system malfunction indicator is on
  • Incorrect operation of the passenger detection system
  • Lack of system response to changes in the cabin

Causes

  • Open or short circuit in the sensor circuit
  • Interior scanning sensor malfunction
  • Wiring harness damage
  • Problems with the security control unit

How to Fix

  1. Check the integrity of the interior scan sensor circuit
  2. Inspect the wiring harness for damage
  3. Check the functionality of the sensor
  4. Scan the control unit for additional errors
  5. Replace the sensor or repair the circuit if necessary

Related codes

B2178B2179B2180

FAQ

What does the B2177 code mean?

B2177 is an OBD-II diagnostic trouble code that indicates: Interior Scanning Sensor Circuit Failure

What causes a B2177 error code?

The most common causes of B2177 include: Open or short circuit in the sensor circuit; Interior scanning sensor malfunction; Wiring harness damage; Problems with the security control unit.

How do I fix a B2177 diagnostic trouble code?

To fix B2177: Check the integrity of the interior scan sensor circuit. Inspect the wiring harness for damage. Check the functionality of the sensor. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B2177?

Do not drive — repair immediately

How much does it cost to fix B2177?

The estimated repair cost for B2177 is $56–167. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat