refer to O2 sensor circuit high voltage (Bank 2, Sensor 2), Renault-specific codes (sometimes starting with "DF") often point toward pressure sensors or electrical irregularities. replacement part
To resolve the P158B code, you may need to: p158b renault
If cleaning doesn't work, the most common solution is or the entire throttle body assembly, depending on your Renault model's design. refer to O2 sensor circuit high voltage (Bank
The car may vibrate or feel unstable when stopped. p158b renault