It can be a source of frustration and confusion when your Dodge vehicle’s computer displays the P1740 code. The code definition is TCM Internal Malfunction, and the description is that the engine started, the vehicle was driven over 30 mph in 3rd gear with the Torque Converter Clutch (TCC) and Overdrive Clutch engaged, and the Powertrain Control Module (PCM) detected an invalid engine speed to output shaft ratio with the TCC or O/D Clutch engaged. There are a variety of potential causes for this code, ranging from burnt, contaminated, or excessively debris-filled Automatic Transmission Fluid (ATF) to a flow restriction or problem in the oil pump shaft, to an internal transmission problem with the O/D clutch seals or valve body. Other causes could be that the Overdrive clutch or TCC clutch is damaged or has failed, or that the transmission valve body is leaking, damaged, or has failed. It is important to identify the cause of the P1740 code in order to effectively fix the problem.
Causes and Solutions for the Dodge P1740 Code
| Cause | Solution |
|---|---|
| Burnt, contaminated, or excessively debris-filled Automatic Transmission Fluid | Change the ATF fluid, clean the transmission and replace the filter |
| Flow restriction or problem in the oil pump shaft | Replace the oil pump and inspect the transmission for any other damage |
| Internal transmission problem with the O/D clutch seals or valve body | Replace the O/D clutch seals or valve body and inspect the transmission |
| Overdrive clutch or TCC clutch is damaged or has failed | Replace the Overdrive clutch or TCC clutch and inspect the transmission |
| Transmission valve body is leaking, damaged, or has failed | Replace the transmission valve body and inspect the transmission |
When your Dodge vehicle’s computer displays the P1740 code, it can be a symptom of a complex issue. The code definition is TCM Internal Malfunction, and the description is that the engine started, the vehicle was driven over 30 mph in 3rd gear with the Torque Converter Clutch (TCC) and Overdrive Clutch engaged, and the Powertrain Control Module (PCM) detected an invalid engine speed to output shaft ratio with the TCC or O/D Clutch engaged. With this code, there can be a variety of potential causes, from burnt, contaminated, or excessively debris-filled Automatic Transmission Fluid (ATF) to a flow restriction or problem in the oil pump shaft, and more. It is important to identify the cause of the P1740 code in order to effectively fix the problem. In order to identify the cause of the Dodge P1740 code, it is useful to refer to a table that outlines the causes and solutions.
Burnt, Contaminated, or Excessively Debris-filled Automatic Transmission Fluid
If the Dodge P1740 code is being triggered by burnt, contaminated, or excessively debris-filled Automatic Transmission Fluid, the solution is to change the ATF fluid, clean the transmission, and replace the filter. This can help to restore the proper performance of the transmission and reduce the recurrence of the P1740 code.
Flow Restriction or Problem in the Oil Pump Shaft
If there is a flow restriction or problem in the oil pump shaft, the solution is to replace the oil pump and inspect the transmission for any other damage. This can help to restore the proper performance of the transmission and reduce the recurrence of the P1740 code.
Internal Transmission Problem with the O/D Clutch Seals or Valve Body
If there is an internal transmission problem with the O/D clutch seals or valve body, the solution is to replace the O/D clutch seals or valve body and inspect the transmission. This can help to restore the proper performance of the transmission and reduce the recurrence of the P1740 code.
Overdrive Clutch or TCC Clutch is Damaged or Has Failed
If the Overdrive clutch or TCC clutch is damaged or has failed, the solution is to replace the Overdrive clutch or TCC clutch and inspect the transmission. This can help to restore the proper performance of the transmission and reduce the recurrence of the P1740 code.
Transmission Valve Body is Leaking, Damaged, or Has Failed
If the transmission valve body is leaking, damaged, or has failed, the solution is to replace the transmission valve body and inspect the transmission. This can help to restore the proper performance of the transmission and reduce the recurrence of the P1740 code.
Conclusion: Overcoming the Dodge P1740 Code
When your Dodge vehicle’s computer displays the P1740 code, it is important to identify the cause of the code in order to effectively fix the problem. There are a variety of potential causes for the Dodge P1740 Code, ranging from burnt, contaminated, or excessively debris-filled Automatic Transmission Fluid (ATF) to a flow restriction or problem in the oil pump shaft, and more. By referring to a table that outlines the causes and solutions of the Dodge P1740 Code, it is possible to effectively diagnose the problem and determine the best course of action to take in order to fix it. With the right approach, the Dodge P1740 Code can be effectively overcome.
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