P0747 Mazda Code - Pressure Control Solenoid 'A' Stuck On
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 Pressure Control Solenoid. 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
- P0747 Mazda indicates Pressure Control Solenoid 'A' Stuck On.
- Common causes
- Common causes include Low transmission fluid level, Dirty transmission fluid, Faulty Pressure Control Solenoid.
- 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 P0747 Mazda Description
What are the Possible Causes of the DTC P0747 Mazda?
- Low transmission fluid level
- Dirty transmission fluid
- Faulty Pressure Control Solenoid
- Pressure Control Solenoid harness is open or shorted
- Pressure Control Solenoid circuit poor electrical connection
How to Fix the DTC P0747 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 P0747 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.
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Frequently Asked Questions about P0747 Mazda Code
1. What does the OBDII code P0747 mean on a Mazda?
P0747 indicates that the Pressure Control Solenoid 'A' in the transmission is stuck in the "on" position, causing improper fluid pressure regulation.
2. What are the common symptoms of code P0747 in a Mazda?
Symptoms may include harsh or erratic shifting, transmission slipping, reduced fuel efficiency, or the vehicle going into limp mode.
3. What causes the P0747 code to trigger on a Mazda?
The code is typically caused by a malfunctioning pressure control solenoid, dirty or degraded transmission fluid, or internal transmission issues like blockages or mechanical wear.
4. Can bad transmission fluid cause the P0747 code on a Mazda?
Yes, old or contaminated transmission fluid can lead to blockages or improper solenoid function, which may trigger the P0747 code.
5. How do you diagnose the P0747 code on a Mazda?
Diagnosis involves checking the transmission fluid condition, testing the pressure control solenoid for electrical faults, and inspecting the wiring harness and connectors for damage.
6. Is it safe to drive a Mazda with the P0747 code?
Driving with this code is not recommended, as it can lead to further transmission damage, poor performance, and unsafe driving conditions.
7. How do you fix the P0747 code on a Mazda?
Repairs may include replacing the faulty pressure control solenoid, flushing and replacing the transmission fluid, repairing wiring issues, or addressing internal transmission damage.
8. How much does it cost to fix the P0747 code on a Mazda?
Repair costs can range from $150 to $400 for solenoid replacement, but may be higher if transmission rebuilding or replacement is needed.
9. Can I clear the P0747 code without fixing the issue?
Clearing the code without addressing the root cause will only result in the code returning and may worsen the underlying issue.
10. What should I do if my Mazda triggers the P0747 code repeatedly?
If the code persists after repairs, consult a professional mechanic to inspect for deeper transmission issues or errors in the initial diagnosis.
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