Clio 182 standard spec.
Originally, I had the emissions light on continuously, after recently using simple OBD, it showed two faults - post-cat O2 sensor and pre-cat O2 Sensor.
Have replace both of these sensors as this seemed the likely problem.
Emissions light can be cleared via OBD, but appears again immediately after next start-up, just after the engine fires.
OBD again shows fault Sensor 1 (pre-cat), there are the usual fluctuating voltages coming from the sensors when engine is running so guess I got 'em plugged in OK.
I am not sure if I can read the sensor 1 fault 'what caused it' using a simple fault finding ELM327 interface to Scanmaster?
What else is there that can indirectly trigger the pre-cat sensor fault besides the lambda itself?
I am thinking that because the light comes back on immediately the engine fires - is a big clue for somebody who knows?
Just to add the engine starts and runs fine.
Originally, I had the emissions light on continuously, after recently using simple OBD, it showed two faults - post-cat O2 sensor and pre-cat O2 Sensor.
Have replace both of these sensors as this seemed the likely problem.
Emissions light can be cleared via OBD, but appears again immediately after next start-up, just after the engine fires.
OBD again shows fault Sensor 1 (pre-cat), there are the usual fluctuating voltages coming from the sensors when engine is running so guess I got 'em plugged in OK.
I am not sure if I can read the sensor 1 fault 'what caused it' using a simple fault finding ELM327 interface to Scanmaster?
What else is there that can indirectly trigger the pre-cat sensor fault besides the lambda itself?
I am thinking that because the light comes back on immediately the engine fires - is a big clue for somebody who knows?
Just to add the engine starts and runs fine.
