What is a TCM fault?
Some of the most common signs of transmission control module failure include trouble shifting gears, getting stuck in gear, and lower gas mileage. Any signs of a bad transmission control module warrant a trip to your local mechanic. Your vehicle’s transmission control module (TCM) is like a tiny computer.
What happens when a car has a bad TCM?
If you notice that your car is not correctly picking up speed, or is struggling to go uphill, you may have a bad TCM. Your car’s speed depends on your gears cycling at the right time. If your TCM is faulty, then it may cycle through gears too quickly or too slowly which will negatively impact your car’s ability to accelerate properly.
When to replace a Transmission Control Module ( TCM )?
Rather than relying on hydraulic or mechanical control over a transmission system, newer vehicles use a transmission control module instead. A car’s TCM will likely never need replacing, but if you have a bad transmission control module, immediate replacement (or repair) will be necessary.
Why is my TCM Not reading the speed sensor?
A corroded connector or a problem with the wiring could be the problem, and the usual solution is to replace the input speed sensor. The speed sensors tell you how fast your output or input shaft is moving. If the TCM can’t read this information, your speedometer won’t read accurately. The output speed sensor may need to be replaced.
Why does my TCM keep reporting the same error code?
They’re all reporting the same error, but they’re reporting it for different gears. The TCM’s input and output sensors measure the speed of the input and output shafts, and if they’re not moving at the right speed, you’ll get these transmission trouble codes.
If you notice that your car is not correctly picking up speed, or is struggling to go uphill, you may have a bad TCM. Your car’s speed depends on your gears cycling at the right time. If your TCM is faulty, then it may cycle through gears too quickly or too slowly which will negatively impact your car’s ability to accelerate properly.
A corroded connector or a problem with the wiring could be the problem, and the usual solution is to replace the input speed sensor. The speed sensors tell you how fast your output or input shaft is moving. If the TCM can’t read this information, your speedometer won’t read accurately. The output speed sensor may need to be replaced.
Rather than relying on hydraulic or mechanical control over a transmission system, newer vehicles use a transmission control module instead. A car’s TCM will likely never need replacing, but if you have a bad transmission control module, immediate replacement (or repair) will be necessary.
They’re all reporting the same error, but they’re reporting it for different gears. The TCM’s input and output sensors measure the speed of the input and output shafts, and if they’re not moving at the right speed, you’ll get these transmission trouble codes.