OBD Guide

B0936

Coolant Level Sensor Circuit Malfunction

B0936 is an OBD-II diagnostic trouble code meaning: Coolant Level Sensor Circuit Malfunction. Common causes: open or short circuit in the sensor circuit, coolant level sensor malfunction. Estimated repair cost: $22–56.

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$22–56 (est.)

Symptoms

  • Low coolant level indicator is on
  • False coolant level readings on the dashboard
  • Engine overheating due to lack of warning

Causes

  • Open or short circuit in the sensor circuit
  • Coolant level sensor malfunction
  • Wiring harness damage
  • Poor contact in sensor connectors

How to Fix

  1. Check the coolant level in the reservoir
  2. Inspect the sensor wiring harness and connectors for damage.
  3. Check the sensor circuit for an open or short circuit
  4. Replace the coolant level sensor if necessary
  5. Clear error codes and check if error is returned

Related codes

Error B0936 by Vehicle Brand

FAQ

What does the B0936 code mean?

B0936 is an OBD-II diagnostic trouble code that indicates: Coolant Level Sensor Circuit Malfunction

What causes a B0936 error code?

The most common causes of B0936 include: Open or short circuit in the sensor circuit; Coolant level sensor malfunction; Wiring harness damage; Poor contact in sensor connectors.

How do I fix a B0936 diagnostic trouble code?

To fix B0936: Check the coolant level in the reservoir. Inspect the sensor wiring harness and connectors for damage.. Check the sensor circuit for an open or short circuit. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B0936?

Limited driving only, diagnose soon

How much does it cost to fix B0936?

The estimated repair cost for B0936 is $22–56. Actual cost depends on your vehicle, location, and labor rates.

See also: Russian version · NationStat