P158b Renault -

Verify the code is active (static) and not just stored in memory. Check freeze-frame data to see engine conditions when the fault occurred.

Inspect the wiring harness and connectors associated with the idle control actuator. Look for broken, bent, or corroded pins. p158b renault

You might experience sluggish acceleration or "limp mode" in some instances. Difficulty Starting: Engine cranks but struggles to start. Potential Causes for Renault P158B Verify the code is active (static) and not

The component itself has failed.

Disclaimer: P158B is a complex code. If you are not comfortable working with high-voltage sensors or delicate wiring, it is recommended to have the car diagnosed by a professional Renault technician. To help narrow down the exact cause, let me know: Look for broken, bent, or corroded pins

If hardware checks out, a dealer update may be necessary.