Cummins-Onan QD error code 41 (QD)
Generator rotor short — while flashing the field the controller sensed the rotor circuit shorted to ground. (Code 41, second-level)
What to check, and in what order, is in the app. A step-by-step flow walks this code with the pass/fail measurements, wiring schematics and procedures that go with it, and it works offline in the bay.
Start free trial 14 days free, no card neededDocumented in
- Onan RV Quiet Diesel Operator Manual 0981-0173 (HDKCA/HDKCB)
- Onan RV QD HDKCA/HDKCB Operator Manual 0981-0173 (rv-tech-resources/93-onan-qd-diesel/Onan_RVQD_HDKCA_HDKCB_Operator_0981-0173.pdf)
Related codes
- 32 (QD)Starting fault — the controller could not detect cranking speed…
- 35 (QD)EE checksum fault — at startup the controller detected an EEPROM…
- 36 (QD)Mechanical fault — engine speed fell below 1000 RPM for 0.5 s (not by…
- 38 (QD)Field overload — during normal voltage regulation, field voltage…
- 42 (QD)ROM fault — at startup the controller detected a ROM memory error.…
- 43 (QD)RAM fault — at startup the controller detected a RAM memory error.…
- 45 (QD)Speed sense lost — after start disconnect the controller lost speed…
- 48 (QD)Loss of field sense — the field-sense circuit on the controller board…