Hyundai DTC P1309 – Rough road sensor – voltage high
DTC P1309 meaning on Hyundai
The DTC P1309 on a Hyundai refers to the Rough Road Sensor – Voltage High fault code. This code indicates that the rough road sensor is detecting a higher voltage signal than expected, which can affect the vehicle’s performance.
Hyundai DTC P1309 symptoms
Some common symptoms of the Hyundai DTC P1309 may include:
- Engine misfires
- Rough idling
- Decreased fuel efficiency
- Loss of power
Hyundai DTC P1309 causes
The potential causes of the Hyundai DTC P1309 include:
- Faulty rough road sensor
- Wiring issues or shorts in the sensor circuit
- Corrosion or poor connections in the sensor system
Hyundai DTC P1309 seriousness
The DTC P1309 on a Hyundai should be addressed promptly as it can lead to drivability issues and potentially cause further damage to the vehicle if left unresolved.
How to diagnose DTC P1309 on Hyundai
To diagnose the DTC P1309 on a Hyundai, a mechanic may perform the following steps:
- Use a diagnostic scanner to retrieve the fault code
- Inspect the rough road sensor and its wiring for any visible damage
- Test the sensor’s voltage output using a multimeter
- Check for any corrosion or poor connections in the sensor system
How to fix DTC P1309 on Hyundai
To fix the DTC P1309 on a Hyundai, the following steps may be taken:
- Replace the faulty rough road sensor
- Repair any wiring issues or shorts in the sensor circuit
- Clean or repair any corroded connections in the sensor system
How to erase DTC P1309 on Hyundai
To erase the DTC P1309 on a Hyundai, a mechanic can use a diagnostic scanner to clear the fault code from the vehicle’s computer system. Once the issue has been resolved and the code erased, the vehicle should be retested to ensure the problem has been fixed.
Recommended tools for Hyundai diagnostics
Explore our expert picks: The Best OBD2 Scanners for 2025
Easy-to-use Multimeter for reliable diagnostics: AstroAI Auto-ranging Multimeter
Some of the links on this page may be affiliate links, which means we may earn a small commission if you make a purchase. This helps us keep our DTC database up to date and provide valuable content for free. We only recommend products that we have tested and believe to be the best in their class.