persistant engine management light
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persistant engine management light
Hi
we bought an A180 CDI for my wife despite the fact the engine management light was on, It was because she wanted a small car and because she is small she wanted an elevated driving position, parking sensors and heated seats were also a must. This car was fully loaded and was the only used car we found that fitted the bill, so we took a chance. I took it to the local Mercedes dealer as the vendor said his garage couldn't find any faults on the car. They said the DPF not regenerating was the problem. They found a leaking air pipe which they said was the cause but the DPF would still not regenerate because it was high mileage and too clogged up they said. Due to the age of the car they recommended DPF cleaning at a local company but the cleaning company said it was unlikely to be successful with 200k miles and suggested a buying a low mileage used DPF and having it cleaned. I decided against this as there were no guarantees of any value and the cost was £100 more than fitting the premium quality after market DPF from BM Catalysts which had a three year guarantee. With the new after market DPF fitted the engine light was finally off. Unfortunately it returned 8 miles later and the garage told me it was now showing throttle body. As no used or after market parts were available nationally we went for one of the five new throttle bodies still in stock with Mercedes Benz. The garage also put a deep clean product in the diesel tank as we suspect the problems have been around for a while and the previous owner kept clearing codes to get it through its MOT tests.
Once again the engine management light was extinguished for about 45 miles and then returned. At this point I have bought a code reader and the car now shows 14A600 positive control deviation of exhaust gas recirculation control is too high. If I clear the code it returns in a day or two. The EGR valve (part number A6401402060) appears to be only operated by vacuum so I don't know if any sensors are involved. Its only done about 100 miles since the cleaner was added to the fuel so I don't know if this could be the problem or whether it even does any good.
Replacing the EGR valve doesn't look difficult and its not too pricey £153 for the genuine part and £50 for after market. Can anyone offer any advice, should i go ahead and change the EGR valve or wait to see if the cleaning product does any good? The car runs perfectly no loss of power no smoke and a steady tickover. No starting problems either.
we bought an A180 CDI for my wife despite the fact the engine management light was on, It was because she wanted a small car and because she is small she wanted an elevated driving position, parking sensors and heated seats were also a must. This car was fully loaded and was the only used car we found that fitted the bill, so we took a chance. I took it to the local Mercedes dealer as the vendor said his garage couldn't find any faults on the car. They said the DPF not regenerating was the problem. They found a leaking air pipe which they said was the cause but the DPF would still not regenerate because it was high mileage and too clogged up they said. Due to the age of the car they recommended DPF cleaning at a local company but the cleaning company said it was unlikely to be successful with 200k miles and suggested a buying a low mileage used DPF and having it cleaned. I decided against this as there were no guarantees of any value and the cost was £100 more than fitting the premium quality after market DPF from BM Catalysts which had a three year guarantee. With the new after market DPF fitted the engine light was finally off. Unfortunately it returned 8 miles later and the garage told me it was now showing throttle body. As no used or after market parts were available nationally we went for one of the five new throttle bodies still in stock with Mercedes Benz. The garage also put a deep clean product in the diesel tank as we suspect the problems have been around for a while and the previous owner kept clearing codes to get it through its MOT tests.
Once again the engine management light was extinguished for about 45 miles and then returned. At this point I have bought a code reader and the car now shows 14A600 positive control deviation of exhaust gas recirculation control is too high. If I clear the code it returns in a day or two. The EGR valve (part number A6401402060) appears to be only operated by vacuum so I don't know if any sensors are involved. Its only done about 100 miles since the cleaner was added to the fuel so I don't know if this could be the problem or whether it even does any good.
Replacing the EGR valve doesn't look difficult and its not too pricey £153 for the genuine part and £50 for after market. Can anyone offer any advice, should i go ahead and change the EGR valve or wait to see if the cleaning product does any good? The car runs perfectly no loss of power no smoke and a steady tickover. No starting problems either.
