P0749 Mazda Code - Pressure Control Solenoid 'A' Intermittent
Quick Answer
The Pressure Control (PC) Solenoid Valve an electronic pressure regulator that controls transmission line pressure based on current flow through its coil windings. Common causes include Low transmission fluid level, Dirty transmission fluid, Faulty line pressure solenoid valve 'A'. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
- What it means
- P0749 Mazda indicates Pressure Control Solenoid 'A' Intermittent.
- Common causes
- Common causes include Low transmission fluid level, Dirty transmission fluid, Faulty line pressure solenoid valve 'A'.
- Severity
- High - diagnose this code as soon as possible.
- Can I drive?
- Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
Code P0749 Mazda Description
What are the Possible Causes of the DTC P0749 Mazda?
- Low transmission fluid level
- Dirty transmission fluid
- Faulty line pressure solenoid valve 'A'
- Line pressure solenoid valve 'A' harness is open or shorted
- Line pressure solenoid valve 'A' circuit poor electrical connection
How to Fix the DTC P0749 Mazda?
Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.
Code Tech Notes
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P0749 Mazda code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.
Need more information about the P0749 Mazda code?
Need more information on how to fix the P0749 Mazda code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the P0749 Mazda code diagnosed by a professional: Find a repair shop in your area
Frequently Asked Questions about P0749 Mazda Code
1. What does the OBDII code P0749 mean on a Mazda?
P0749 indicates an intermittent issue with the Pressure Control Solenoid 'A,' which helps regulate hydraulic pressure in the transmission.
2. What are the common symptoms of P0749 on a Mazda?
Symptoms may include harsh or delayed shifting, transmission slipping, poor acceleration, and the Check Engine Light turning on.
3. What causes the P0749 code to appear?
Common causes include a faulty pressure control solenoid, dirty or low transmission fluid, damaged wiring or connectors, or an issue with the transmission control module (TCM).
4. Can I continue driving my Mazda with a P0749 code?
Driving with this code is not recommended, as it can lead to further transmission damage or unsafe driving conditions due to shifting issues.
5. How can I fix the P0749 code on my Mazda?
Repairs may include replacing the pressure control solenoid, cleaning or replacing the transmission fluid, repairing damaged wiring, or reprogramming or replacing the TCM.
6. How do I diagnose a P0749 code in my Mazda?
Diagnosis involves scanning for codes, inspecting transmission fluid condition, testing the solenoid’s electrical circuit, and performing a transmission pressure test if needed.
7. What tools are needed to diagnose and fix a P0749 code?
You’ll need an OBDII scanner, a multimeter, and, in some cases, transmission pressure testing equipment.
8. How much does it cost to repair a P0749 code on a Mazda?
Repair costs vary, but replacing a pressure control solenoid can range from $200 to $500, while additional diagnostics or severe transmission issues may increase costs.
9. Can low or dirty transmission fluid cause a P0749 code?
Yes, low or contaminated transmission fluid can restrict solenoid operation and trigger this code.
10. Is the P0749 code specific to Mazdas, or does it affect other vehicles too?
P0749 is not Mazda-specific; it can appear on other vehicles with automatic transmissions that use similar pressure control solenoids.
Discuss the causes and fixes for P0749 Mazda OBDII Code
Code P0749 Mazda comments
No comments found for this page.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.
