P158b Renault Access

"Check Anti-Pollution System" or general warning lights on the dashboard.

What is the of your Renault (e.g., Duster, Clio)? Does it have a diesel (dCi) or petrol (TCe) engine? Are you experiencing rough idle or stalling ? p158b renault

Minor signal drops cause jerky acceleration or erratic idling variations. "Check Anti-Pollution System" or general warning lights on

: While Renault may categorize this as a safety feature for the mechanical longevity of the car, owners have reported it as a hazard, as the vehicle can stall unexpectedly in the middle of busy junctions or on inclines. Component Spotlight: The P158B Potentiometer Are you experiencing rough idle or stalling

📉 An unstable timing signal causes the ECU to miscalculate fuel delivery, leading to hesitations, rough idling, or occasional jerking during acceleration.

Renault 4 production codes (P158, P158B, P158F) / Renault 4 TL owner’s manuals (1978–1986) / La Renault 4 de mon père by Marc-Antoine Colin.