OBD Guide
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C1894

Air Suspension Left Rear Height Sensor Circuit Open

C1894 is an OBD-II diagnostic trouble code meaning: Air Suspension Left Rear Height Sensor Circuit Open. Common causes: broken or damaged wiring harness, oxidation of sensor contacts. Estimated repair cost: $56–167.

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$56–167 (est.)

Symptoms

  • Incorrect operation of the air suspension
  • The suspension fault light comes on
  • The car may sag on one side

Causes

  • Broken or damaged wiring harness
  • Oxidation of sensor contacts
  • Level sensor fault
  • Problems with connectors

How to Fix

  1. Check the integrity of the wiring harness
  2. Clean sensor contacts and connectors
  3. Check sensor resistance
  4. Replace sensor if necessary

Related codes

C1895C1896C1897

FAQ

What does the C1894 code mean?

C1894 is an OBD-II diagnostic trouble code that indicates: Air Suspension Left Rear Height Sensor Circuit Open

What causes a C1894 error code?

The most common causes of C1894 include: Broken or damaged wiring harness; Oxidation of sensor contacts; Level sensor fault; Problems with connectors.

How do I fix a C1894 diagnostic trouble code?

To fix C1894: Check the integrity of the wiring harness. Clean sensor contacts and connectors. Check sensor resistance. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with C1894?

Limited driving only, diagnose soon

How much does it cost to fix C1894?

The estimated repair cost for C1894 is $56–167. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat