On F9Q 1.9 dCi engines (Laguna II, Espace IV), the same code appears for an entirely different reason:
In 2003–2008 Renault models (Megane II, Scenic II, Laguna II), the brake pedal sensor assembly was placed , subject to dust, humidity from wet shoes, and mechanical vibration. The internal wiper contact design was later revised (Part number changed from 82 00 645 443 to 82 00 890 737). code défaut p1525 renault
In generic OBD-II, P1525 often points to "Throttle Actuator Control (TAC) System – Idle Speed Monitor." , this code takes on a completely different, specific meaning: Fault in the Brake Pedal Position Sensor Plausibility / Turbo Pressure Regulation Implausibility. On F9Q 1