OBD Guide
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B1141

Diagnosis Sensor Unit

B1141 is an OBD-II diagnostic trouble code meaning: Diagnosis Sensor Unit. Common causes: diagnostic module malfunction, damage to the wiring harness (harness). Estimated repair cost: $56–167.

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

Symptoms

  • Airbag light is on
  • The security system does not respond to diagnostics
  • No signals from shock sensors

Causes

  • Diagnostic module malfunction
  • Damage to the wiring harness (harness)
  • Short circuit or open circuit
  • Software error in SRS unit

How to Fix

  1. Check error codes with an OBD-II scanner
  2. Inspect the security system wiring harness for damage.
  3. Check the diagnostic module control circuit
  4. Test the diagnostic module on the bench
  5. Reflash or replace the module if necessary

Related codes

B1140B1142B1135B1136

FAQ

What does the B1141 code mean?

B1141 is an OBD-II diagnostic trouble code that indicates: Diagnosis Sensor Unit

What causes a B1141 error code?

The most common causes of B1141 include: Diagnostic module malfunction; Damage to the wiring harness (harness); Short circuit or open circuit; Software error in SRS unit.

How do I fix a B1141 diagnostic trouble code?

To fix B1141: Check error codes with an OBD-II scanner. Inspect the security system wiring harness for damage.. Check the diagnostic module control circuit. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B1141?

Do not drive — repair immediately

How much does it cost to fix B1141?

The estimated repair cost for B1141 is $56–167. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat