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fiP1743 & P1744 Getrag TCU Faults – Causes, Symptoms & Repair
The Continental Getrag TCU, found in vehicles equipped with the Renault EDC (DPS6) transmission, is designed to ensure smooth and efficient gear changes in this advanced dual-clutch system. However, in real-world applications, error codes such as P1743 and P1744 frequently occur. These fault codes almost always point to issues with the clutch actuators and are often behind problems such as jerky driving, refusal to shift, or complete transmission failure.
Symptoms of Error Codes P1743 and P1744 on the Getrag DCT250
When error codes P1743 or P1744 are active, one or more of the following symptoms may occur:
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Difficulty changing or complete failure to change gears
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Jerky or abrupt driving behaviour during acceleration
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The transmission goes into limp mode (limited functionality)
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Dashboard messages such as “Gearbox failure”
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Gear selector stuck in "N" (Neutral) or "P" (Park)
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In many cases, both error codes appear simultaneously or within a short time of each other, suggesting that both clutch actuators may be affected.
Understanding Error Codes P1743 and P1744
Each clutch in this DCT transmission is operated by its actuator. These actuators include an electric motor that controls the clutch via a gear mechanism. When the motor or its integrated position sensor fails, the clutch cannot function properly. This results in:
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P1743: Fault in Clutch Actuator 1
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P1744: Fault in Clutch Actuator 2
Common Causes of the Problem
At ACTRONICS, we frequently see the same internal defects in TCUs with error codes P1743 and P1744:
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Worn electric motors in the clutch actuators due to thermal stress
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Damaged gear mechanisms caused by overheating or prolonged stress
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Faulty position sensors providing incorrect feedback to the TCU
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Worn bearings are hindering smooth motor movement
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Cold solder joints on the PCB (printed circuit board), causing intermittent communication issues
In some cases, internal contamination (e.g. from a leaking seal) can also lead to actuator malfunctions.
Diagnosis: How to Identify the Problem
Before replacing the TCU, proper diagnosis is essential. Follow these steps:
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Use a suitable diagnostic tool (Renault Clip, Ford IDS, Bosch KTS, etc.) to read fault codes
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Check power and ground connections to the TCU
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Monitor clutch position readings for irregularities
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Visually inspect the TCU for signs of overheating or oil ingress
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Determine whether the fault codes are persistent or reappear after clearing
If the error codes return immediately after startup, it usually indicates an internal defect.
Solution for Error Codes P1743 and P1744: Remanufacturing by ACTRONICS
Replacing a TCU can be costly, and availability is often limited. Fortunately, ACTRONICS offers a professional and sustainable remanufacturing service for these Continental Getrag TCUs.
Remanufacturing is the smarter alternative: it's more cost-effective, environmentally friendly, and comes with a full testing guarantee. Best of all, once reinstalled in the original vehicle, no programming is required.
With years of experience and proven quality, ACTRONICS provides a top-tier remanufacturing solution you can rely on.