P0318 Fault Code

Rough Road Sensor A Signal Circuit

• What does that mean?
• Symptoms
• Causes
• Solutions

The P0318 fault code indicates a problem with the Rough Road Sensor A Signal Circuit in a vehicle's system. This sensor is designed to monitor road conditions and relay information about rough terrain to the vehicle's onboard computer systems. When this code is triggered, it suggests that the signal from the sensor is either out of range or not being received properly.

What are the symptoms of the P0318 code?

Symptoms that may accompany the P0318 code include:

• Illuminated check engine light
• Unusual handling or stability of the vehicle
• Reduced traction control or stability control performance
• Erratic behavior of the vehicle’s suspension system

What causes the P0318 code?

Common causes of the P0318 code include:

• Damaged wiring or connectors in the sensor circuit
• A faulty Rough Road Sensor
• Issues with the vehicle's Engine Control Unit (ECU)
• Loose or corroded electrical connections
• Software or programming errors in the ECU

How to fix P0318?

To resolve the P0318 code, the following steps can be taken:

• Inspect the wiring and connectors related to the Rough Road Sensor for any signs of damage or corrosion
• Test the Rough Road Sensor itself for proper operation and replace it if necessary
• Clear the fault code and perform a test drive to see if the error returns
• Update or reprogram the ECU if required