DELPHI EFI Code 0123 Code 0171 Code 0131 Code 0132 42 KohlerEngines.com 24 690 01 Rev. D Component: Throttle Position Sensor (TPS) Fault: TPS Circuit High Voltage Condition: Shorted connection or faulty sensor. Conclusion: TPS Sensor Related Ɣ6HQVRUFRQQHFWRURUZLULQJ Ɣ6HQVRURXWSXWDIIHFWHGRUGLVUXSWHGE\ dirt, grease, oil, wear. Ɣ6HQVRUORRVHRQWKURWWOHERG\PDQLIROG Throttle Body Related Ɣ7KURWWOHVKDIWRUEHDULQJVZRUQ damaged. Engine Wiring Harness Related Ɣ(&8SLQV%ODFNDQG damaged (wiring, connectors). Ɣ(&8SLQV%ODFNDQGURXWHG near noisy electrical signal (coils, alternator). Ɣ,QWHUPLWWHQWYROWVRXUFHIURP(&8 (pin Black 16).
Ɣ(&8WRKDUQHVVFRQQHFWLRQSUREOHP Component: Fuel System Fault: Maximum adaptation limit exceeded &RQGLWLRQ )XHOLQOHWVFUHHQ¿OWHUSOXJJHGORZ pressure at high pressure fuel line, TPS malfunction, shorted connection, faulty sensor, low fuel or wrong fuel type. Conclusion: Oxygen Sensor Related Ɣ&RUURVLRQRUSRRUFRQQHFWLRQ Ɣ6HQVRUFRQWDPLQDWHGRUGDPDJHG Ɣ$LUOHDNLQWRH[KDXVW Ɣ3RRUJURXQGSDWK Ɣ3LQFLUFXLWZLULQJRUFRQQHFWRUV ECU Black pin 10 or Black pin 17. TPS Sensor Related Ɣ7KURWWOHSODWHSRVLWLRQLQFRUUHFWGXULQJ Learn procedure. Ɣ736SUREOHPRUPDOIXQFWLRQ Engine Wiring Harness Related Ɣ'LIIHUHQFHLQYROWDJHEHWZHHQVHQVHG voltage and actual sensor voltage.
Ɣ3UREOHPLQZLULQJKDUQHVV Ɣ(&8WRKDUQHVVFRQQHFWLRQSUREOHP Systems Related Ɣ,JQLWLRQ VSDUNSOXJSOXJZLUHLJQLWLRQ coil). Ɣ)XHO IXHOW\SHTXDOLW\LQMHFWRUIXHO pressure too low, fuel pump module or lift pump). Ɣ&RPEXVWLRQDLU DLUFOHDQHUGLUW\ restricted, intake leak, throttle bores). Ɣ%DVHHQJLQHSUREOHP ULQJVYDOYHV Ɣ([KDXVWV\VWHPOHDN PXIÀHUÀDQJH oxygen sensor mounting boss, etc.). Ɣ)XHOLQFUDQNFDVHRLO Component: Oxygen Sensor Fault: O2S 1 Circuit Low Voltage Condition: Open connection, broken wire or faulty sensor. Conclusion: Oxygen Sensor Related Ɣ6HQVRUFRQQHFWRURUZLULQJSUREOHP Ɣ6HQVRUFRQWDPLQDWHGFRUURGHGRU damaged.
Ɣ3RRUJURXQGSDWK Ɣ3LQFLUFXLWZLULQJRUFRQQHFWRUV ECU Black pin 10 or 17. TPS Learn Procedure Incorrect Ɣ/HDQFRQGLWLRQ FKHFNR[\JHQVHQVRU signal with VOA and see Oxygen Sensor). Engine wiring harness related such as a cut wire, broken or pinched. Component: Oxygen Sensor Fault: O2S 1 Circuit High Voltage Condition: Shorted connection or faulty sensor. Conclusion: Oxygen Sensor Related Ɣ6HQVRUFRQQHFWRURUZLULQJSUREOHP Ɣ6HQVRUFRQWDPLQDWHGRUGDPDJHG Ɣ3RRUJURXQGSDWK Ɣ3LQFLUFXLWZLULQJRUFRQQHFWRUV ECU Black pin 10 or Black pin 17. Engine Wiring Harness Related Ɣ'LIIHUHQFHLQYROWDJHEHWZHHQVHQVHG voltage and actual sensor voltage. Ɣ6KRUWLQZLUHKDUQHVV