Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
This code means that the car's computer found a problem inside the transmission control module, which is like the brain for the car's gears. It noticed something isn't right with how it counts signals, and it's not counting as it should.
The Transmission Control Module (TCM) is responsible for managing the transmission's operations. This code indicates that there's an issue with the internal logic or signal processing of the TCM, specifically related to an interference counter that is not reaching the expected threshold.
The P1733 code is triggered when the TCM detects an internal error related to its level 2 interference counter. This counter is used to track signal interference or disruptions, and if it falls below a certain threshold, it suggests potential issues with signal integrity or processing within the TCM.
• Check Engine Light is on
• Transmission may not shift properly
• Vehicle may enter limp mode
• Faulty Transmission Control Module
• Wiring issues or poor connections
• Software glitch or corruption in the TCM
Transmission Control Module (TCM): A computer that controls the transmission's functions.
Interference Counter: A mechanism within the TCM that tracks signal disruptions.
• Use an OBD-II scanner to confirm the code.
• Inspect TCM wiring and connections for damage or corrosion.
• Check for any software updates or reflash the TCM if necessary.
• Repair or replace damaged wiring or connectors.
• Reflash or update the TCM software.
• Replace the TCM if it is found to be faulty.
• OBD-II scanner
• Multimeter
• Screwdrivers and basic hand tools
$300 - $1,200
Moderate
• Ford F-150
• Chevrolet Silverado
• Dodge Ram 1500
• Regularly check and maintain transmission fluid levels.
• Ensure TCM software is up to date.
• Inspect wiring and connectors for wear and tear.
Transmission Control Module Issue
• Avoid driving the vehicle if it is in limp mode.
• Consult a professional mechanic for an accurate diagnosis.
• Keep up with regular vehicle maintenance to prevent future issues.
Check with the vehicle manufacturer for warranty coverage on the transmission control module.
This code has been more prevalent in vehicles with older TCM designs, where signal interference was a more common issue.
Moderate – It is important to address this issue to prevent potential transmission damage.
Driving with a faulty transmission control module can lead to unsafe driving conditions. It is recommended to have the issue diagnosed and repaired promptly.
• Vehicle ignition on and engine running.
• Transmission in normal operating mode.
The Transmission Control Module is typically located near the transmission or within the engine bay, depending on the vehicle model.
Q: Can I drive with a P1733 code?
A: It's not recommended as it may lead to further transmission issues or unsafe driving conditions.
Q: How do I reset the TCM?
A: Resetting the TCM can sometimes be done by disconnecting the battery for a few minutes, but it's best to have a professional handle it to ensure no data loss.
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