P1746 Mazda Code - Electronic Pressure Control Solenoid Low Conditions
Quick Answer
The Diagnostic Trouble Code (DTC) will set when with the engine running in gear at cruise speed and the Powertrain Control Module (PCM) detects that the Torque Converter Clutch (TCC) circuit was shorted to ground. Common causes include Faulty Line Pressure Solenoid, Line Pressure Solenoid harness is open or shorted, Line Pressure Solenoid circuit poor electrical connection. 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
- P1746 Mazda indicates Electronic Pressure Control Solenoid Low Conditions.
- Common causes
- Common causes include Faulty Line Pressure Solenoid, Line Pressure Solenoid harness is open or shorted, Line Pressure Solenoid circuit poor electrical connection.
- 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 P1746 Mazda Description
What are the Possible Causes of the DTC P1746 Mazda?
- Faulty Line Pressure Solenoid
- Line Pressure Solenoid harness is open or shorted
- Line Pressure Solenoid circuit poor electrical connection
How to Fix the DTC P1746 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.
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P1746 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 P1746 Mazda Code
1. What does the OBDII code P1746 mean on a Mazda?
P1746 indicates an issue with the Electronic Pressure Control (EPC) Solenoid, specifically a low voltage condition detected in the circuit.
2. What are common symptoms of code P1746 in a Mazda?
Symptoms can include harsh or erratic shifting, transmission slipping, reduced fuel efficiency, and the check engine light being illuminated.
3. What causes the P1746 code to appear in a Mazda?
Common causes include a faulty EPC solenoid, damaged wiring or connectors in the solenoid circuit, low transmission fluid, or a malfunctioning transmission control module (TCM).
4. Can driving with a P1746 code damage my Mazda’s transmission?
Yes, prolonged driving with this code can lead to excessive wear on the transmission due to improper pressure regulation, potentially causing costly damage.
5. How do I diagnose the P1746 code in my Mazda?
Diagnosis involves checking the transmission fluid level and condition, inspecting the EPC solenoid for faults, testing the wiring and connectors, and scanning the TCM for additional codes.
6. How can I fix the P1746 code in my Mazda?
Repairs may include replacing the EPC solenoid, repairing or replacing damaged wiring, cleaning connectors, or updating or reprogramming the TCM.
7. Is a transmission fluid change necessary for fixing code P1746?
If the transmission fluid is low, dirty, or contaminated, a fluid change may be necessary as part of the repair process.
8. How much does it cost to fix a P1746 code on a Mazda?
Costs vary depending on the issue but may range from $200 to $500 for solenoid replacement and up to $1,000 if wiring or TCM repairs are needed.
9. Can a P1746 code clear on its own in a Mazda?
The code is unlikely to clear on its own; the underlying issue must be diagnosed and repaired before the code can be cleared.
10. Is the P1746 code specific to Mazda vehicles?
No, while P1746 is common in Mazdas, it can also appear in other vehicles with similar EPC solenoid issues, but repair procedures may vary.
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