OBD Guide
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C1726

Battery Voltage Of Rear Right Transmitter Drops

C1726 is an OBD-II diagnostic trouble code meaning: Battery Voltage Of Rear Right Transmitter Drops. Common causes: wiring harness damage, short circuit in the circuit. Estimated repair cost: $56–167.

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

Symptoms

  • Restraint indicator light is on
  • Error C1726 in fault memory
  • Reduced effectiveness of the passive safety system

Causes

  • Wiring harness damage
  • Short circuit in the circuit
  • Right rear transmitter malfunction
  • Problems with the restraint system control unit

How to Fix

  1. Check the integrity of the wiring harness
  2. Measure the voltage at the transmitter
  3. Check connections and contacts
  4. Replace transmitter if necessary

Related codes

B0026B0027B0028

FAQ

What does the C1726 code mean?

C1726 is an OBD-II diagnostic trouble code that indicates: Battery Voltage Of Rear Right Transmitter Drops

What causes a C1726 error code?

The most common causes of C1726 include: Wiring harness damage; Short circuit in the circuit; Right rear transmitter malfunction; Problems with the restraint system control unit.

How do I fix a C1726 diagnostic trouble code?

To fix C1726: Check the integrity of the wiring harness. Measure the voltage at the transmitter. Check connections and contacts. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with C1726?

Do not drive — repair immediately

How much does it cost to fix C1726?

The estimated repair cost for C1726 is $56–167. Actual cost depends on your vehicle, location, and labor rates.

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