Diagnostic article Generic OBD-II
P0795: Quest solenoid C links converter lockup and shift pressure
For the 2004 Quest RE5F22A, P0795 concerns solenoid C electrical control and monitored response, with cold-fluid lockup inhibition requiring context.
Read before applying this article
Documented application
2004 Nissan Quest factory AT manual, RE5F22A transmission section, January 2005 revision. Hydraulic functions and current references are variant-specific.
The code alone does not identify a failed part or establish that a vehicle is safe to drive. Confirm the vehicle, reporting module and applicable service procedure.
P0795 in the 2004 Nissan Quest RE5F22A manual concerns pressure-control solenoid C. This normally-low linear solenoid participates in torque-converter clutch control as well as the application and release of specified brake elements inside the transmission.
Lack of lockup can be intentional
Nissan notes that converter lockup is prohibited when transmission fluid is too cold. A cold vehicle that does not lock the converter therefore does not, by that observation alone, establish a failed solenoid C.
The P0795 monitor instead recognizes abnormal voltage and an irregular comparison between target and monitored values. The diagnostic scan checks both output and monitor current. Those readings must be evaluated under the stated selector and warmed-transmission conditions, because the reference changes with the operating state.
Trace the current path in sections
The procedure distinguishes the TCM-side circuit, terminal-cord assembly, external harness and solenoid-side connection. This gives a technician a way to localize a failed measurement before choosing an internal repair. A control command shown on the scanner does not prove current reached the valve.
The component inspection has its own temperature-qualified resistance specification. If it fails, the document supplies the applicable control-valve-assembly repair direction; a code alone is not that failed inspection.
After repair, complete the dedicated confirmation routine and retain the original output-versus-feedback evidence. These conclusions apply to the RE5F22A section and should not be transferred to another Quest transmission without checking its manual.
Documented application
2004 Nissan Quest factory AT manual, RE5F22A transmission section, January 2005 revision. Hydraulic functions and current references are variant-specific.
Source
2004 Nissan Quest Factory Service Manual: AT, physical PDF pages 558, 560, 561, 562.
Article source documents
Source checks describe how the text was prepared; they do not certify a diagnosis or confirm compatibility with every vehicle using this code.
Original code reference
Dictionary definition
Pressure Control Solenoid C
This definition retains its original catalog scope. The article above is limited to its explicitly documented application.
Reference scope
Generic OBD-II definition.
A manufacturer label does not establish the model, year, engine or module to which a diagnosis applies. Read the safety and diagnostic limits.
Definition source
- DTC Database: pinned community code definitions
Source checked · MIT