Question about 2000 Hyundai Accent
My car was throwing a p1124 and p1128 code..we have replaced the front O2 sensor throttle position sensor spark plugs and fuel filter we also checked the pvc hose for leaks found none..we were told that it could be the fuel pump not pumping at the needed psi..can you please tell me 1. how do qwe test the fuel pressure 2. what else it could be? thank you for any help you can give me....
I did some research because the P1128 is an odd code for Hyundai and I couldnt find a lot of information on it, but I found two things that may help and neither point to the fuel pump.
1. P1128 in Hyundai refers to the Mass Airflow Sensor or MAF being defective.
2. There is a TSB from Hyundai, TSB 01-36-022, but I wasnt able to ascertain if that was a specific TSB for the MAF or if it was information on how to test the MAF or some other information.
P1124 seems to be a related code as well but I could find little on it. P1124 in a Subaru is an issue with the Throttle Position Sensor or TPS, but I could not confirm that for Hyundai.
My first suggestion would be to check your air filter and if it has not been changed in a while or is really dirty, then change it as a restriction in air flow might be mistaken by the computer as a problem with the MAF.
Posted on Jan 02, 2009
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Posted on Jan 02, 2017
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Table 3: Using the Hi-Scan Pro in the Hyundai Diagnostic Menus Current Data Screen TPS (%) 0
MAF (kg/h) 9.5
Table 4: Using the Hi-Scan Pro in the OBD-II Menus Current Data Screen TPS (%) 0
MAF (g/h) 2.5
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