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 computer that helps control your car's transmission is having a small error. Think of it like your game console having a minor glitch.
The Transmission Control Module (TCM) is experiencing a minor error related to the Quadrature Amplitude Demodulation Circuit (QADC).
The P1722 code indicates that the Transmission Control Module has detected a minor error in the Quadrature Amplitude Demodulation Circuit. This circuit is responsible for processing signals that help the TCM control the transmission effectively.
• Check Engine Light is on
• Transmission may not shift smoothly
• Possible decrease in fuel efficiency
• Faulty Transmission Control Module
• Wiring issues related to the TCM
• Software glitch in the TCM
Transmission Control Module (TCM): A computer that controls the operation of the transmission.
Quadrature Amplitude Demodulation Circuit (QADC): A circuit in the TCM that processes signals for transmission control.
• Use an OBD-II scanner to confirm the code.
• Inspect wiring and connections to the TCM for damage or corrosion.
• Test the TCM for proper operation using specialized diagnostic equipment.
• Repair or replace damaged wiring or connectors.
• Update or reflash the TCM software.
• Replace the TCM if it is found to be faulty.
• OBD-II scanner
• Multimeter
• Diagnostic software for TCM
$200 - $800
Moderate
• Vehicle 1
• Vehicle 2
• Vehicle 3
• Regularly inspect and maintain transmission wiring.
• Ensure TCM software is up to date.
• Avoid harsh driving conditions that can stress the transmission.
Transmission Control Module Issue
• Have a professional diagnose the issue to prevent further transmission problems.
• Avoid driving aggressively until the issue is resolved.
Check with the vehicle manufacturer for any applicable warranties on the transmission control module.
The P1722 code has been associated with minor transmission control issues in various vehicle models, often resolved with software updates or minor repairs.
Moderate – While the vehicle may still be drivable, addressing the issue promptly can prevent more serious transmission problems.
Driving with a malfunctioning transmission control module may lead to unsafe driving conditions. It is advisable to address the issue as soon as possible.
• Vehicle at operating temperature
• Transmission in normal operating mode
The Transmission Control Module is typically located near the transmission or under the hood, depending on the vehicle model.
Q: Can I drive my car with a P1722 code?
A: It's possible to drive, but it's recommended to fix the issue soon to avoid further damage.
Q: Will a P1722 code affect my car's performance?
A: Yes, it can cause rough shifting or decreased fuel efficiency.
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