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 is having trouble figuring out how fast a part inside the transmission is spinning.
The Transmission Control Module (TCM) is responsible for managing the transmission's operations. This code indicates that there is an error in the TCM's calculations regarding the virtual turbine speed, which is a critical parameter for transmission performance.
The P1824 code is triggered when the TCM detects an inconsistency or error in its calculations related to the virtual turbine speed. This speed is a calculated value used by the TCM to optimize the transmission's shifting and performance. An error here can lead to improper transmission operation.
• Check Engine Light (CEL) is on
• Transmission slipping or shifting improperly
• Reduced fuel efficiency
• Faulty Transmission Control Module (TCM)
• Software issues within the TCM
• Electrical problems such as damaged wiring or poor connections
Transmission Control Module (TCM): A computer that controls the transmission's functions.
Virtual Turbine Speed: A calculated value used by the TCM to manage transmission performance.
• Use an OBD-II scanner to confirm the P1824 code.
• Inspect the TCM and its connections for damage or corrosion.
• Check for any software updates or recalls related to the TCM.
• Reprogram or update the TCM software.
• Repair or replace damaged wiring or connectors.
• Replace the Transmission Control Module if necessary.
• OBD-II scanner
• Multimeter
• Screwdriver set
$300 - $1500
Moderate
• Chevrolet Malibu
• GMC Sierra
• Cadillac CTS
• Regularly update vehicle software.
• Ensure proper maintenance of the transmission system.
• Inspect electrical connections periodically.
Transmission Control Issue
• Avoid driving aggressively until the issue is resolved.
• Schedule a diagnostic check with a professional mechanic.
Check with your vehicle manufacturer for any applicable warranties related to the transmission system.
This code has been associated with vehicles experiencing transmission control issues due to software glitches or electrical faults.
Moderate – It is recommended to address this issue soon to avoid potential transmission damage.
Driving with a malfunctioning transmission can be unsafe. It is advisable to have the vehicle inspected and repaired promptly.
• Vehicle at operating temperature
• Transmission in normal driving mode
The Transmission Control Module is typically located near the transmission or under the dashboard, depending on the vehicle model.
Q: Can I drive with a P1824 code?
A: It's not recommended to drive for extended periods with this code, as it can lead to transmission damage.
Q: How can I prevent a P1824 code?
A: Regular maintenance and software updates can help prevent this code from appearing.
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