What to do if Mot failed Lambda emissions too high?
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Why are Lambda emissions too high even with new sensor?
Live data would be good to see if the lambda sensors are doing what they’re supposed to. Click to expand… I’d do this Matt. There will be someone local to you no doubt. It will also let you check to see if the MAP readings are ok as if the filter isn’t flowing correctly it will be slightly high compared to atmosphere.
Is the MOT emissions too high with the new sensor?
MOT failed lambda emissions too high even with new sensor! I’m currently having emissions problems with the MOT, it’s passing the actual emissions test fine however the lambda reading it still high. Today they fitted a new Bosch pre CAT lambda but it’s made no difference.
What is the Lambda reading on the MOT test?
Lambda is measured to 3 decimal points during the test. For Bet test limits 1.030 is a pass, 1.031 is a fail. Likewise, 0.970 is a pass, 0.969 is a fail. If it fails the BET test then a full cat test must be carried out using the manufacturer’s specified limits before a fail should be issued.
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What happens when a lambda sensor is malfunctioned?
A malfunctioning Lambda sensor may send an erroneous signal that the air/fuel mixture is too rich. The vehicle’s computer will make the correction according to the signal that the Lambda sensor sent, decreasing the amount of fuel in the ratio, causing the spark plugs to misfire. Emissions Test Failure
MOT failed lambda emissions too high even with new sensor! I’m currently having emissions problems with the MOT, it’s passing the actual emissions test fine however the lambda reading it still high. Today they fitted a new Bosch pre CAT lambda but it’s made no difference.
Why does the Check Engine light come on on my Lambda?
The “Check Engine” light may come on. A vehicle owner will have to have a reputable technician check the code. A cold engine with a faulty Lambda sensor that has unburned oxygen in the catalytic converter may emit a “rotten egg” smell. A malfunctioning Lambda sensor may send an erroneous signal that the air/fuel mixture is too rich.