![]() My 55 plate sxi 1.2, only done 19000mls and has code p0100,so decided to replace the maf with another new bosch one.Still same problem,Car drives fine at first, then when its switched off,EML light comes on when started again on 1st start or sometimes 2nd,revs drop to about 500rpm on tickover and is very jerky at low revs,i can clear codes again,then its ok (though tick over is still jumps between 500&700rpm) and performs fine till i switch off and back on EML is on again. Following these steps should help in pinpointing the root cause of this failure code and performing the correct repair.Vauxhall Corsa C - Mass Airflow problems 2005 1.2 sxi - Big I Having the incorrect estimate of air going into the engine is going to impact the overall engine performance in many ways, even if they are not immediately obvious. Many engine functions are based on the reading from the MAF. The MAF is one of the most important sensors in the engine. This could be checked by using a scan tool and calculating the expected mass air flow based on engine speed and intake air temperature and compare that with the mass air flow being reported by the MAF on the scan tool. If still not resolved, the MAF sensor should be evaluated for accuracy. You can then repeat the same evaluation as performed after replacing the air filter. ![]() If the situation does not get better, remove the MAF and inspect for any type of dirt buildup. Check MAF Sensor Accuracy with Scan Tool.If you believe this may have been a cause, clear the failure codes and try to repeat conditions where this failure was previously noticed. ![]() It may take a few minutes for the condition to improve. If any amount of dirt is seen on the air filter, I would first replace this and notice if any of the previously noted symptoms still exist.įor example, if the engine would sometimes stumble at idle, replace the air filter and check if idle becomes more stable. The first step I would recommend for repair is to check the air filter. If neither of these failure codes is seen, the MAF may truly be defective. Other potential causes could be dirt or dust buildup on the MAF sensor element, which is likely to have been caused by the air filter not being cleaned frequently enough. One common cause of the P0102 error code could be a dirty air filter. There are a few different root causes to consider when this error code is seen. In the case of a marginal fault, it is possible that no adverse symptoms will be noticed. Many of the symptoms may not be detectable, depending on the severity of the fault.
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