P0750 on a 2012 Honda Odyssey
Shift Solenoid A Malfunction
P0750 on a 2012 Honda Odyssey indicates shift solenoid a malfunction. It usually stays drivable short-term but should be diagnosed promptly. The most common cause is failed shift solenoid a (electrical or mechanical) (typically $250–$900). Confirm the root cause before replacing parts.
What does P0750 mean on a 2012 Honda Odyssey?
P0750 is set when the TCM detects that shift solenoid A is not responding to commands — either the circuit is electrically open or shorted, or the solenoid is mechanically stuck. Shift solenoid A controls one of the hydraulic shift paths inside the valve body; depending on the transmission, "A" may control specific shifts (1-2 or 2-3) or be paired with another solenoid for upshift logic. Without a working solenoid A, the transmission cannot make those shifts and typically enters limp mode.
This guide covers P0750 across the 2010-2014 Honda Odyssey generation — the symptoms, causes, and diagnostic steps below apply to every model year from 2010 through 2014.
Is it safe to drive a 2012 Honda Odyssey with P0750?
In most cases a 2012 Honda Odyssey stays drivable for short trips with P0750 active, but diagnose and repair it promptly. This is a high-severity code — ignoring it can lead to further damage or a failed emissions test.
What are the symptoms of P0750 on a 2012 Honda Odyssey?
- Check Engine Light is illuminated
- Transmission stuck in a single gear or limited gear range
- Hard, harsh, or absent upshifts
- Possible no movement in drive (if solenoid is critical to initial gear engagement)
- Engine RPM unusually high at cruise (no upshift completing)
- Reduced fuel economy
- Often paired with P0700 (transmission control malfunction)
What causes P0750 on a 2012 Honda Odyssey?
| Cause | Likelihood | Estimated repair (USD) |
|---|---|---|
| Failed shift solenoid A (electrical or mechanical) | Most common | $250–$900 |
| Damaged solenoid wiring or external transmission connector | Common | $100–$500 |
| Contaminated transmission fluid causing valve sticking | Common | $150–$500 |
| Worn or stuck valve body causing the solenoid to lose pressure regulation | Occasional | $600–$2,000 |
| Failed TCM driver for the solenoid circuit | Rare | $500–$1,500 |
| Internal transmission damage (rare for P0750 alone) | Rare | $2,500–$6,500 |
How to diagnose this on a 2012 Honda Odyssey
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Check fluid level and condition
Always start a transmission diagnosis with fluid. Most modern transmissions require a specific procedure to check level — typically warm, level surface, engine running, selector in park. Burnt-smelling or dark fluid means clutch material in circulation; fix the underlying issue, not just the solenoid.
Tools: Vehicle-specific service procedure, Replacement fluid if needed
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Pull all transmission codes from the TCM
P0750 alone is one repair scope. P0750 with P0731-P0734 (ratio incorrect) or P0741 (TCC stuck off) means broader transmission issues that may not resolve with a solenoid replacement alone.
Tools: Scan tool with TCM access
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Test shift solenoid A electrically
Disconnect the external transmission connector. Find the solenoid A pin in the wiring diagram and measure resistance — typically 10–30 Ω. Infinite or near-zero means a failed solenoid. Confirm the TCM is commanding voltage during a shift attempt by back-probing while driving.
Tools: Multimeter, Wiring diagram, Back-probe pins
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Inspect the connector for fluid contamination
A failing case seal allows transmission fluid to wick up the external wiring harness, contaminating the connector. Look for fluid inside the connector or up the harness. If found, repair the seal AND likely replace the contaminated harness section — fluid in the connector creates intermittent faults that can mimic solenoid failure.
Tools: Connector unlock tool, Flashlight
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Drop the pan and inspect for clutch material
Brown or gritty paste on the pan magnet indicates clutch slippage somewhere in the transmission. If the solenoid is bad, that's one repair; if the pan also shows clutch material, the transmission has bigger problems and a solenoid replacement is just a stopgap.
Tools: Drain pan, New filter and gasket, Common hand tools
NHTSA complaints & recalls for the 2012 Honda Odyssey
Owner-reported safety complaints and official recalls filed with the U.S. National Highway Traffic Safety Administration for the 2012 Honda Odyssey. Use these to gauge how common a problem is on your specific vehicle before you start chasing Honda Odyssey diagnostics.
- ENGINE 39
- POWER TRAIN 24
- SERVICE BRAKES 60
- ELECTRICAL SYSTEM 33
- STRUCTURE 25
5 active recalls
- SEATS:MID/REAR ASSEMBLY Nov 2017
Honda (American Honda Motor Co.) is recalling certain 2011-2017 Honda Odyssey vehicles. The second row outboard seats can slide sideways to one of two positions. If a seat is placed between either of the two positions when attaching the seat to the vehicle floor, the seat will…
NHTSA campaign 17V725000 - SEATS:MID/REAR ASSEMBLY Dec 2016
Honda (American Honda Motor Co.) is recalling certain model year 2011-2016 Odyssey vehicles manufactured August 17, 2010, to October 1, 2015. The affected vehicles have second row outboard seats that have a release lever that allows the seats to move for easier access to the thi…
NHTSA campaign 16V933000 - SUSPENSION:FRONT Dec 2011
HONDA IS RECALLING CERTAIN MODEL YEAR 2012, ODYSSEY VEHICLES MANUFACTURED FROM OCTOBER 31, 2011, THROUGH NOVEMBER 30, 2011. THE RETENTION NUT FOR THE FRONT RIGHT LOWER SUSPENSION DAMPER BOLT MAY NOT HAVE BEEN TIGHTENED TO THE PROPER TORQUE, POTENTIALLY ALLOWING THE NUT TO LOOSEN…
NHTSA campaign 11V602000 - POWER TRAIN:AUTOMATIC TRANSMISSION Apr 2013
Honda is recalling certain model year 2012-2013 CR-V, Odyssey, and model year 2013 Acura RDX vehicles. During sub-freezing temperatures, the brake-shift interlock blocking mechanism may become slow and allow the gear selector to be moved from the Park position without pressing t…
NHTSA campaign 13V143000
How do I fix P0750 on a 2012 Honda Odyssey?
- Replace shift solenoid A (often available as part of a solenoid pack)
- Repair the transmission external connector or harness
- Service transmission fluid and filter
- Replace the valve body for stuck valve issues
- Full transmission rebuild for internal damage
About the 2010-2014 Honda Odyssey
The 2010-2014 Honda Odyssey was commonly sold with the following powertrains: 3.5L V6. Common trims include LX, EX, EX-L, Touring, Elite.
What “solenoid A” actually does depends on the transmission
Different transmissions use different shift logic, so “shift solenoid A” controls different specific shifts:
- 4-speed automatic (older GM 4L60E, Ford 4R70W) — solenoid A typically gates the 1-2 shift
- 5-speed automatic (Ford 5R55W, ZF 5HP) — solenoid A often controls 2-3 shift
- 6-speed automatic (GM 6L80, Aisin AW) — multiple solenoids combine; A is one of several
The repair manual for the specific transmission will identify which shift A controls. The symptom set varies accordingly — some P0750 conditions strand the vehicle, others just produce harsh or skipped shifts.
Solenoid pack vs individual solenoid replacement
Modern transmissions group all shift solenoids into a single “solenoid pack” that bolts to the valve body. Replacing all solenoids at once (as a pack) is often the same labor as one solenoid alone — and prevents the other solenoids from failing shortly after as the pack ages out together. For high-mileage transmissions, pack replacement is the more economical choice.
When the solenoid is fine but P0750 still sets
Two non-obvious causes that can fool a parts-swap repair:
- External connector contaminated with fluid — looks identical to solenoid failure on a multimeter but the fluid is the real issue
- Stuck valve body sleeve — solenoid is electrically perfect but the hydraulic valve it controls is stuck open or closed; pack swap won’t help, valve body service or replacement is required