OBD Guide

C1727

Battery Voltage Of Rear Left Transmitter Drops

C1727 is an OBD-II diagnostic trouble code meaning: Battery Voltage Of Rear Left Transmitter Drops. Common causes: poor contact in transmitter connector, broken or damaged wires in the harness. Estimated repair cost: $56–167.

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

Symptoms

  • The passive safety system fault indicator is on
  • Unstable operation of the passive safety system
  • Lack of system response in case of accident

Causes

  • Poor contact in transmitter connector
  • Broken or damaged wires in the harness
  • Left rear transmitter malfunction
  • Low voltage in the on-board network
  • Problems with the restraint system control unit

How to Fix

  1. Check the voltage at the battery and generator terminals
  2. Inspect the wiring harness and connectors for damage.
  3. Check the contacts in the transmitter connector
  4. Test the transmitter for functionality
  5. If necessary, replace the transmitter or repair the wiring

Related codes

FAQ

What does the C1727 code mean?

C1727 is an OBD-II diagnostic trouble code that indicates: Battery Voltage Of Rear Left Transmitter Drops

What causes a C1727 error code?

The most common causes of C1727 include: Poor contact in transmitter connector; Broken or damaged wires in the harness; Left rear transmitter malfunction; Low voltage in the on-board network.

How do I fix a C1727 diagnostic trouble code?

To fix C1727: Check the voltage at the battery and generator terminals. Inspect the wiring harness and connectors for damage.. Check the contacts in the transmitter connector. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with C1727?

Do not drive — repair immediately

How much does it cost to fix C1727?

The estimated repair cost for C1727 is $56–167. Actual cost depends on your vehicle, location, and labor rates.

See also: Russian version · NationStat