: If the DPF is clogged or the differential pressure sensor is faulty, the car will disable cruise control as a precaution.
| Code | Meaning | Relationship | |------|---------|--------------| | | Boost Pressure Sensor “Signal Too Low” | Same sensor, different threshold. | | 1525 F5 | Boost Pressure Sensor “Signal Too High” | Same sensor, opposite condition. | | 1510 F1 | Turbocharger Control – Wastegate Position Sensor Fault | May accompany 1525 F3 if wastegate is malfunctioning. | | 1520 F3 | Turbocharger Speed Sensor Fault | Indicates possible turbo mechanical issue that also affects boost pressure. | | 1020 C2 | Intake Air Temperature Sensor Fault | Can affect boost calculations but is a separate system. | renault dtc1525f3
When the sensor’s signal is out of the calibrated window, the ECU assumes a fault and logs DTC 1525 F3. : If the DPF is clogged or the
On Renaults with the 2.0 dCI (M9R engine), also check the fuel pressure sensor wiring near the EGR valve – heat damage is common. | | 1510 F1 | Turbocharger Control –
| Question | Answer | |----------|--------| | | Not advisable. Even if the engine appears normal, the ECU may be operating in a protective mode, which reduces performance and fuel efficiency, and may hide a developing turbo or sensor fault that could become serious. | | Is the BPS the same as a MAP sensor? | In many Renault models the BPS is a dedicated boost pressure sensor located after the intercooler, but it essentially measures the same parameter (absolute pressure) as a MAP sensor. The ECU treats it specifically for turbo boost control. | | Will replacing the sensor reset the MIL automatically? | After replacement, you must clear the stored codes with a scanner and then complete a proper drive cycle. If the underlying issue is resolved, the MIL will stay off. | | My car shows both 1525 F3 and 1525 F4 – which one should I fix first? | Both codes point to the same sensor. The dual codes usually mean the sensor voltage is oscillating between low and high extremes, often caused by wiring or a faulty sensor. Start with wiring/connector inspection, then replace the sensor if needed. | | Is it safe to drive with a blown boost sensor? | Short‑term driving is possible, but the ECU will limit boost, leading to reduced power and higher fuel consumption. Prolonged driving can cause the engine to run richer than optimal, increasing emissions and potentially harming catalytic converters. | | Can a faulty BPS cause a “black smoke” issue? | Yes. If the sensor reports low pressure (under‑boost) while the throttle is wide open, the ECU enriches the mixture to compensate, which can cause black smoke during acceleration. |
: Leaks in the intercooler hoses or a faulty MAP (Manifold Absolute Pressure) sensor are frequent triggers for this "multiplex signal" error. ✅ Recommended Action Plan 1525F3 code in Renault vehicles: Common reasons