P0750: Shift Solenoid A Malfunction
Severity: high
What it means: P0750 means the computer found a problem with shift solenoid 'A', an electrically controlled valve inside an automatic transmission that directs fluid to change gears. Many transmissions go into limp mode (stuck in one gear) when this sets.
Safe to drive? Only gently and for a short distance. The transmission may be stuck in one gear, which makes highway driving unsafe.
Common symptoms
- Check engine light
- Stuck in one gear (limp mode)
- Harsh, late or missing shifts
Likely causes, ranked
- Failed shift solenoid or solenoid packShop
- Wiring or connector faultShop
- Low or dirty transmission fluidDIY or shop
- Transmission computer faultShop
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Vehicle-specific notes
- 2008–2014 Dodge Avenger: An owner still had P0700 and P0750 after replacing speed sensors, the TCM, a solenoid and fluid; members said read the transmission computer's codes first. Read the full answer · Source
DIY or shop?
Checking fluid is DIY. Electrical testing and solenoid replacement are usually shop work.
Before you replace parts
- Read the codes with a scan tool that talks to the transmission computer.
- Check the transmission fluid level and condition.
- Inspect the transmission wiring harness and connectors for damage, corrosion or shorts.
- Have the solenoid resistance and circuit tested before replacing the solenoid or computer.
- Check your VIN for recalls, service bulletins and software updates.
Safety / mechanic note
Verify with a mechanic. Limp mode can leave you unable to keep up with traffic. A code points to a circuit or system, not always a specific part.
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