If the Check Engine light of your Renault is on and the scanner shows the P0309 code, it means the ECU has detected the following problem:
"Cylinder 8 Misfire Detected"
Despite being a generic fault, how it affects performance and where the physical problem is located changes a lot depending on the specific Renault model you drive.
Find out if you can keep driving or if you urgently need to stop. Connect an onboard reader and let CarWatch decipher exactly what's wrong with your Renault.
👉 Diagnose my Renault for FreeTo clear the engine light and read the P0309 code from your phone, you need an OBD2 adapter compatible with the Renault ECU.
🛒 View Compatible Scanner on Amazon