Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
The car's computer found a problem inside the part that controls the gears, like a game controller not working right.
The Transmission Control Module (TCM) has detected an internal error related to interference levels that are below the expected threshold.
P1737 indicates that the TCM has encountered a Level 2 error due to an interference counter falling below the threshold. This suggests a potential issue with the internal logic or communication within the TCM.
• Transmission shifting problems
• Illuminated check engine light
• Vehicle stuck in limp mode
• Faulty Transmission Control Module
• Electrical interference or wiring issues
• Software glitch in the TCM
Transmission Control Module (TCM): A computer that controls the transmission functions.
Interference Counter: A measure of electrical interference affecting the TCM.
• Perform a diagnostic scan to confirm the code.
• Inspect the TCM and related wiring for damage.
• Check for software updates or reprogram the TCM.
• Replace or repair the TCM if faulty.
• Fix any wiring or electrical interference issues.
• Reprogram or update the TCM software.
• OBD-II scanner
• Multimeter
• Software update tool
$300 - $1200
Moderate
• Honda Accord
• Acura TL
• Nissan Altima
• Regularly update vehicle software.
• Inspect and maintain electrical connections.
• Avoid aftermarket electronic devices that may cause interference.
Transmission Control Module Issue
• Do not ignore the check engine light.
• Have the vehicle inspected by a professional.
• Avoid driving in harsh conditions until repaired.
Check if the TCM is covered under the vehicle's powertrain warranty.
This code is often associated with vehicles experiencing TCM issues due to age or software bugs.
Moderate – It should be addressed soon to avoid further transmission issues.
Driving with a faulty TCM can lead to unsafe driving conditions. Address the issue promptly.
• Vehicle at operating temperature
• Transmission in drive mode
The Transmission Control Module is usually located near the transmission or under the hood.
Q: Can I drive with a P1737 code?
A: It's not recommended as it may lead to transmission problems and unsafe driving conditions.
Q: How can I reset the TCM?
A: Disconnect the battery for a few minutes or use a diagnostic tool to reset it, but this won't fix the underlying issue.
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