I hafe p1128 and p1805 code,what i sell do?
P1128 is a check engine issue and P1805 in an immobilizer. The easiest way is to go to a local garage and have the computer reset (clear the codes). The immobilizer is most likely bringing up the engine code. There was probably a miscommunication between the immobilizer and the computer causing the code which then in turn "check engine". Start there...
Go to www.automecanico.com + www.autoelectronico.com translate with your browser and get the topic and fix it.
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SOURCE: what does code number P1128 mean when light is on
P1128 - Long Term Fuel Trim Multiplicative System Too Lean.
The ECM
will set a code and the MIL will turn on if the long-term fuel trim
value goes from 10% to 15% lean for 30 seconds during two driving
cycles when the following conditions are met:
1.- Engine loads exceeds 1.8 milliseconds.
2.- Engine coolant temp. is above 158F (70C).
3.- Canister purge system is not operating.
4.- Mass air flow is less than or equal to 5.5grams per second.
5.- Engine speed is below 1000RPM.
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SOURCE: trouble code 1997 Hyundai Elantra, P1128
P1128 trouble code is for (Upstream Heated O2 Sensors Swapped). Did you switch around any of the O2 sensors?
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