Renault Repair Questions? Ask a Mechanic for Answers ASAP
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If the engine continues to run normally and does not buckle and the temperature is ok, you can still drive.
Usually a sensor is defective if the lamp lights up without any further symptoms. To find out what exactly is defective, the fault memory must be read out by a garage using an OBD scanner. This should be done promptly, but as long as you can still drive.
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This is the exhaust gas purification system, i.e. the catalytic converter and the associated sensors.