OBD Guide
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B2237

Rear Left Sensor Malfunction

B2237 is an OBD-II diagnostic trouble code meaning: Rear Left Sensor Malfunction. Common causes: broken or damaged wiring to the sensor, malfunction of the sensor itself. Estimated repair cost: $56–167.

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

Symptoms

  • The security system malfunction indicator is on
  • Airbags may not deploy in an emergency
  • Incorrect operation of belt pretensioners

Causes

  • Broken or damaged wiring to the sensor
  • Malfunction of the sensor itself
  • Security wiring harness problems
  • Contact corrosion

How to Fix

  1. Check the integrity of the wiring to the sensor
  2. Check contacts for corrosion
  3. Replace sensor if necessary
  4. Reset the error and check the system

Related codes

B2238B2236B0100

FAQ

What does the B2237 code mean?

B2237 is an OBD-II diagnostic trouble code that indicates: Rear Left Sensor Malfunction

What causes a B2237 error code?

The most common causes of B2237 include: Broken or damaged wiring to the sensor; Malfunction of the sensor itself; Security wiring harness problems; Contact corrosion.

How do I fix a B2237 diagnostic trouble code?

To fix B2237: Check the integrity of the wiring to the sensor. Check contacts for corrosion. Replace sensor if necessary. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B2237?

Do not drive — repair immediately

How much does it cost to fix B2237?

The estimated repair cost for B2237 is $56–167. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat