OBD Guide

P1318

ABS Rough Road Signal Line Stuck At Battery Volts

P1318 is an OBD-II diagnostic trouble code meaning: ABS Rough Road Signal Line Stuck At Battery Volts. Common causes: open circuit in the rough road signal circuit, short circuit to power in the circuit. Estimated repair cost: $17–89.

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$17–89 (est.)

Symptoms

  • The ABS indicator on the dashboard is on
  • The ABS system may not work correctly
  • Possible false alarms of ABS on a flat road
  • The error is stored in the ECU memory

Causes

  • Open circuit in the rough road signal circuit
  • Short circuit to power in the circuit
  • Rough road sensor malfunction
  • Problems with the ABS module
  • Wiring harness damage

How to Fix

  1. Check the continuity of the rough road signal circuit
  2. Measure the voltage in the circuit
  3. Check rough road sensor
  4. Diagnose ABS module
  5. Replace damaged components if necessary

Related codes

Error P1318 by Vehicle Brand

FAQ

What does the P1318 code mean?

P1318 is an OBD-II diagnostic trouble code that indicates: ABS Rough Road Signal Line Stuck At Battery Volts

What causes a P1318 error code?

The most common causes of P1318 include: Open circuit in the rough road signal circuit; Short circuit to power in the circuit; Rough road sensor malfunction; Problems with the ABS module.

How do I fix a P1318 diagnostic trouble code?

To fix P1318: Check the continuity of the rough road signal circuit. Measure the voltage in the circuit. Check rough road sensor. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P1318?

Limited driving only, diagnose soon

How much does it cost to fix P1318?

The estimated repair cost for P1318 is $17–89. Actual cost depends on your vehicle, location, and labor rates.

See also: Russian version · NationStat