P0750 on Mazda vehicles
Shift Solenoid A Malfunction — what it means on a Mazda, whether it's safe to drive, and the fixes by model and year.
P0750 on a Mazda means shift solenoid a malfunction. Most vehicles stay drivable short-term, but diagnose it promptly. The most common cause is failed shift solenoid a (electrical or mechanical) (typically $250–$900). Pick your Mazda model below for its known failure patterns, recalls, and TSBs.
What does P0750 mean on a Mazda?
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.
P0750 is a standardized OBD-II code, so its definition is the same on every Mazda. What differs by model and engine is which cause is most likely — pick your Mazda model below for a diagnosis tuned to its known failure patterns, recalls, and TSBs.
Is it safe to drive a Mazda with P0750?
In most cases a Mazda 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. Exact tolerance depends on the model and engine.
What causes P0750 on a Mazda?
| 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 |
Repair costs are typical US ranges and vary by Mazda model, model year, and labor rate. A diagnostic trouble code is a symptom, not a guaranteed failed part — confirm the root cause before replacing anything.
P0750 by Mazda model
Select your Mazda model and year for a P0750 diagnosis tuned to that vehicle's failure patterns, recalls, and TSBs.
Mazda CX-5
205 NHTSA owner complaints · 1 recalls on record across the years covered below.
Complaint and recall counts are NHTSA totals for the model years covered on this site, not counts specific to P0750.
P0750 on other makes
Other codes on Mazda vehicles
P0750 on a Mazda: frequently asked questions
What does diagnostic trouble code P0750 mean on a Mazda?
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. P0750 is a standardized OBD-II code, so the definition is the same on every Mazda — which cause is most likely varies by model and engine.
What are the symptoms of P0750 on a Mazda?
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 Mazda?
Failed shift solenoid A (electrical or mechanical) (most-common). Damaged solenoid wiring or external transmission connector (common). Contaminated transmission fluid causing valve sticking (common). Worn or stuck valve body causing the solenoid to lose pressure regulation (occasional). Failed TCM driver for the solenoid circuit (rare). Internal transmission damage (rare for P0750 alone) (rare)
Is it safe to drive a Mazda with P0750?
In most cases a Mazda stays drivable for short trips with P0750 active, but it should be diagnosed and repaired promptly — this is a high-severity code. Ignoring it can lead to further damage or a failed emissions test. Exact tolerance depends on the model and engine.