OBD-II Code
P0746
Severity
Not yet reviewed
Nobody on our side has assessed this code yet, so we are not going to guess at how serious it is.
Can you drive it
We cannot say
Treat it as unknown until a shop reads it with live data. If the check-engine light is FLASHING, stop driving as soon as it is safe to — that means an active misfire, whatever the code.
Indicative cost (USD)
$320–$2,800
From this code's diagnostic notes. Varies by vehicle, diagnosis, parts, and local labor. This is not a repair quote.
P0746 means the pressure control solenoid A (the main line pressure or EPC solenoid on most platforms) is mechanically stuck off or hydraulically defaulting to low pressure, which the TCM detects by commanding pressure and seeing the actual line pressure or shift behavior fail to respond.
How a shop works this
Work from evidence to part, not the other way round. A code names a circuit or a symptom; it does not name the part that failed.
Note every code that is set, not just this one.
Codes that appear together usually narrow the cause faster than any one of them read alone.
Read the freeze frame — the conditions the fault was recorded under.
Cold or warm, idle or load, road speed and engine speed. A fault that only appears cold is a different fault from one that only appears under load, even with the same code on the scanner.
Confirm the fault is current rather than history.
Clear the code and see whether it returns under those same conditions. A code that does not come back may have been logged during a repair, a flat battery, or a bad connection that has since been disturbed.
Then follow the diagnostic notes further down this page, in the order they are written.
They are written in the order a shop works this code, cheapest checks first. Where they name a component, inspect its wiring and connector before replacing it.
If the code comes back after a repair, the underlying fault is still there. That is the point to bring in a scanner with live data and freeze-frame, or a shop that has one.
Common symptoms
- Check engine light
Read the full diagnostic procedureP0746 means the pressure control solenoid A (the main line pressure or EPC solenoid on most platforms) is mechanically stuck off or hydraulically def…
P0746 means the pressure control solenoid A (the main line pressure or EPC solenoid on most platforms) is mechanically stuck off or hydraulically defaulting to low pressure, which the TCM detects by commanding pressure and seeing the actual line pressure or shift behavior fail to respond.
Cheapest-first ladder
- scan live data for commanded versus actual line pressure (when the platform reports both) and watch for a flatline at minimum; check fluid level and condition; pull the pan, drop the valve body, and inspect the EPC solenoid screen for ferrous debris that mechanically pins the spool; bench-test the solenoid resistance against spec before assuming it is bad.
- Caveat: a stuck-off P0746 with burned fluid and debris in the pan is a symptom of a failing transmission, not the root cause.
Vehicle-specific patterns2004-2010 Nissan Maxima/Murano with the RE5F22A and Pathfinder RE5R05A set P0746 from a clogged EPC screen and worn EPC bore in the valve body, a Son…
- 2004-2010Nissan Maxima/Murano with the RE5F22A and Pathfinder RE5R05A set P0746 from a clogged EPC screen and worn EPC bore in the valve body, a Sonnax oversized EPC valve and sleeve is the documented repair.
- 2001-2008Volvo S60/S80/XC90 and 2003-2011 Saab 9-3 with the Aisin AW55-50SN set P0746 from valve body bore wear — a Sonnax AW55-50SN reseal kit with oversized parts is the industry-standard fix.
- 2007-2014GMC Acadia and Buick Enclave with the 6T70/6T75 set P0746 alongside delayed engagement.
- 1998-2005Toyota Camry/Avalon with the U140E/U241E set P0746 from a sticking SLT solenoid.
Estimated repair$320 to $2,800.
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