The P1750 Honda Accord engine trouble code indicates a mechanical problem in the hydraulic control system of the A/T clutch pressure control solenoid. Read on to learn what causes this code, how to diagnose the issue, and how to fix it.
The P1750 Honda Accord error code can be frustrating to deal with, but this guide will provide detailed steps to get your Accord back on the road.
What Causes The P1750 Code In Honda Accords?
The Powertrain Control Module (PCM) monitors the A/T Clutch Pressure Control Solenoid during acceleration. If the solenoid does not meet factory specifications, the PCM will store the P1750 diagnostic trouble code.
Here are the most common causes of the P1750 Honda Accord code:
- Problem with the Transmission Assembly
- Electrical Connection Issue
- Wiring Harness Problem
- Faulty A/T Clutch Pressure Control Solenoid
Problem with the Transmission Assembly
Issues with the transmission assembly can trigger code P1750. Contamination inside the transmission is the root cause of solenoid and valve body problems.
Electrical Connection Issue
An incorrect electrical connection to the A/T clutch pressure control solenoid can cause communication problems. This will set off the P1750 code.
Wiring Harness Problem
If the wiring harness connected to the A/T clutch pressure solenoid is open or shorted, it can cause code P1750.
Faulty A/T Clutch Pressure Control Solenoid
A bad solenoid is often the reason for the P1750 error code. When the solenoid fails, it cannot properly regulate hydraulic pressure.
How To Diagnose P1750 In Honda Accords?
Diagnosing the P1750 Honda Accord code requires a multi-step process. Here are the general guidelines:
- Scan for codes – Use an OBD2 scanner to pull the P1750 code and any other transcodes present.
- Check transmission fluid – Low fluid can cause shift and engagement problems.
- Inspect electrical connectors – Unplug and check the solenoid electrical connectors for corrosion, damage, etc.
- Perform solenoid resistance test – Use a multimeter to test the solenoid coil resistance. Compared to spec.
- Check for related codes – The P0740, P0747, and P2769 codes often accompany a P1750.
- Test drive transmission – Feel for slipping, harsh shifts, and engagement issues.
Following these diagnosis steps will reveal if the fault is wiring, solenoid, valve body, or internal transmission related.
How To Fix P1750 In Your Honda Accord?
Repairing the P1750 Honda Accord code requires locating and fixing the specific problem within the transmission. Here are the most common fixes:
- Flush Contaminated Transmission
- Replace Faulty Solenoid
- Repair Wiring Harness
- Overhaul/Replace Transmission
- Update PCM Software
Flush Contaminated Transmission
If there is internal contamination, flushing the transmission fluid several times can help clean out debris. New fluid with detergents may also free stuck valves.
Replace Faulty Solenoid
A bad A/T clutch pressure control solenoid must be replaced to restore proper hydraulic control. New Honda solenoids cost around $100-150.
Repair Wiring Harness
Damaged or corroded wiring to the solenoid or transmission connector must be repaired. Splicing wires or replacing the harness may be required.
If flushing does not fix shift and engagement problems, the transmission may need an overhaul or replacement. This is more expensive but sometimes necessary.
Update PCM Software
In some cases, a PCM software update is required to restore proper communication with the transmission solenoids.
Best Practices For P1750 Prevention
You can help avoid P1750 and other transmission codes in your Honda Accord by following these tips:
- Change the transmission fluid and filter every 30,000-60,000 miles
- Inspect transmission wiring harnesses for corrosion and damage during maintenance
- Use only OEM or high quality aftermarket solenoids for repairs
- Address leaks and transmission issues promptly to avoid contamination
- Consider a PCM/TCM update if available for your vehicle
Following the factory maintenance schedule and addressing problems early is key to maximizing transmission longevity.
What Model Years Are Affected By P1750 In Honda Accords?
The P1750 code can affect Honda Accords ranging from 1999-2008, depending on the transmission type. It occurs most commonly in 2003-2007 V6 models equipped with the 5-speed automatic transmission.
Is It Safe To Drive With P1750?
You can drive for a short time with a P1750, but it is not recommended. Transmission damage can occur rapidly. Have the code diagnosed and repaired promptly.
Does P1750 Cause Limp Mode?
Yes, Honda Accords with a P1750 code often go into a limp/failsafe mode. This limits engine RPMs and locks the transmission in 3rd gear. It is a protective mode due to issues detected.
Is P1750 A Transmission Control Module Or Engine Code?
The P1750 is set by the Powertrain Control Module (PCM), which controls both engine and transmission functions. So, it can indicate an issue with either system.
Can A P1750 Honda Code Reset Itself?
No, the P1750 will not disappear on its own. The underlying problem must be diagnosed and repaired to permanently clear the code.
The Bottom Line
The P1750 Honda Accord, engine trouble code, indicates an issue within the hydraulic control system, typically caused by a faulty solenoid or internal transmission contamination. Diagnosing the specific root cause and making the proper repair is key to resolving the problem for good.
With proper maintenance and care, Honda Accord transmissions can reliably reach over 200,000 miles. However, neglecting maintenance or transmission problems can quickly lead to costly repairs down the road. So keep up with fluid changes, promptly diagnose issues, and use quality parts for repairs.
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