Abstract: This relates to a method for diagnosing a sensor for a motor vehicle, and to the vehicle, the method including: a) a step of detecting errors in the measurements taken by the sensor; b) a first phase of commanding the cleaning of the sensor; and c) a step of cancelling the detection of measurement errors by the sensor if the difference between the first variation in the richness level determined on the basis of the parameter relating to the pumping current and the second variation determined on the basis of the variation in the voltage across the terminals of the sensor is: i) less than a predefined maximum tolerance threshold; and ii) greater than a predefined minimum tolerance threshold.

Abstract: A computer for a vehicle, the vehicle including a heat engine, a depollution system configured to depollute the exhaust gases originating from the engine, a first probe placed between the outlet of the heat engine and the inlet of the depollution system and configured to measure a first parameter relating to the oxygen level in the exhaust gases exiting the heat engine, a second probe placed at the outlet of the depollution system and configured to measure a second parameter relating to the oxygen level in the exhaust gases exiting the depollution system. The computer being configured to receive the values measured by the first probe and by the second probe over a predefined measurement time interval and to diagnose clogging of the first probe.

Abstract: This relates to a method for diagnosing a sensor for a motor vehicle, and to the vehicle, the method including: a) a step of detecting errors in the measurements taken by the sensor; b) a first phase of commanding the cleaning of the sensor; and c) a step of cancelling the detection of measurement errors by the sensor if the difference between the first variation in the richness level determined on the basis of the parameter relating to the pumping current and the second variation determined on the basis of the variation in the voltage across the terminals of the sensor is: i) less than a predefined maximum tolerance threshold; and ii) greater than a predefined minimum tolerance threshold.

Abstract: A method, for an internal combustion engine including an intake camshaft equipped with a variable intake valve timing device including an intake timing actuator and an exhaust camshaft equipped with a variable exhaust valve timing device including an exhaust timing actuator, of detecting inverted connection of the intake timing actuator with the exhaust timing actuator, including: measuring the angular position of the intake camshaft and the angular position of the exhaust camshaft; commanding one of the two timing actuators according to a setpoint and keeping the other of the two timing actuators immobile; measuring the angular positions of the intake camshaft and of the exhaust camshaft; and comparing: if the angular position of the camshaft corresponding to the timing actuator that's been commanded has not been modified, and if the angular position of the camshaft corresponding to the immobile timing actuator has been modified, inverted connection can be diagnosed.

Abstract: A computer for a vehicle, the vehicle including a heat engine, a depollution system configured to depollute the exhaust gases originating from the engine, a first probe placed between the outlet of the heat engine and the inlet of the depollution system and configured to measure a first parameter relating to the oxygen level in the exhaust gases exiting the heat engine, a second probe placed at the outlet of the depollution system and configured to measure a second parameter relating to the oxygen level in the exhaust gases exiting the depollution system. The computer being configured to receive the values measured by the first probe and by the second probe over a predefined measurement time interval and to diagnose clogging of the first probe.

Abstract: A method, for an internal combustion engine including an intake camshaft equipped with a variable intake valve timing device including an intake timing actuator and an exhaust camshaft equipped with a variable exhaust valve timing device including an exhaust timing actuator, of detecting inverted connection of the intake timing actuator with the exhaust timing actuator, including: measuring the angular position of the intake camshaft and the angular position of the exhaust camshaft; commanding one of the two timing actuators according to a setpoint and keeping the other of the two timing actuators immobile; measuring the angular positions of the intake camshaft and of the exhaust camshaft; and comparing: if the angular position of the camshaft corresponding to the timing actuator that's been commanded has not been modified, and if the angular position of the camshaft corresponding to the immobile timing actuator has been modified, inverted connection can be diagnosed.