OBD Guide
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B1653

Seat Position Airbag Sensor Circuit Malfunction

B1653 is an OBD-II diagnostic trouble code meaning: Seat Position Airbag Sensor Circuit Malfunction. Common causes: open or shorted sensor wiring harness, seat position sensor malfunction. Estimated repair cost: $56–167.

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

Symptoms

  • SRS malfunction lamp is on
  • The airbag may not deploy or deploy incorrectly
  • The error remains in memory even after a reset

Causes

  • Open or shorted sensor wiring harness
  • Seat position sensor malfunction
  • Poor contact in the sensor or SRS unit connectors
  • Damage to the sensor power circuit

How to Fix

  1. Check the integrity of the sensor wiring harness
  2. Check the contacts in the connectors for oxidation and damage.
  3. Check sensor resistance (compare with nominal value)
  4. Replace sensor if necessary
  5. Clear error memory and check if error is returned

Related codes

B1650B1651B1652

FAQ

What does the B1653 code mean?

B1653 is an OBD-II diagnostic trouble code that indicates: Seat Position Airbag Sensor Circuit Malfunction

What causes a B1653 error code?

The most common causes of B1653 include: Open or shorted sensor wiring harness; Seat position sensor malfunction; Poor contact in the sensor or SRS unit connectors; Damage to the sensor power circuit.

How do I fix a B1653 diagnostic trouble code?

To fix B1653: Check the integrity of the sensor wiring harness. Check the contacts in the connectors for oxidation and damage.. Check sensor resistance (compare with nominal value). For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B1653?

Do not drive — repair immediately

How much does it cost to fix B1653?

The estimated repair cost for B1653 is $56–167. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat