Onan HGJAA-HGJAF error code 2 (Low Oil Pressure)
First-level fault. Low-oil-pressure cutoff switch did not open (switch grounded at controller P1-6). Normally-closed switch opens at 14.2 psi. Nominal running pressure 43 psi.
What to check, and in what order, is in the app. The flow Code 2 - Low Oil Pressure walks this code step by step 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
- Cummins-Onan Service Manual (document 0983-0501 Issue 26, March 2018, 202 pp) covering HGJAA Spec A-E / HGJAB A-E / HGJAC A-C / HGJAD A-E / HGJAE A-E / HGJAF A-C (rv-tech-resources/25-onan-hgjaa/0983-0501_Onan_HGJAA-HGJAF_Service_Manual_Issue_26.pdf)
- Onan HGJAA Generator Technician Service Diagnostic Reference (rv-tech-resources/25-onan-hgjaa/Onan_HGJAA_Generator_Technician_Service_Diagnostic_Reference.md)
Related codes
- 1 blinkFirst-level shutdown: high engine coolant temperature (where…
- 3 (Service Check)First-level fault indicating a two-digit fault code is logged. While…
- 4 (Overcrank)First-level fault. Cranking exceeded 30 seconds without engine…
- 12 (Overvoltage)Controller unable to maintain rated voltage. Instantaneous: AC S1-S2…
- 13 (Undervoltage)Controller unable to maintain rated voltage. AC S1-S2 below 108 VAC…