Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
This code means the car's computer is having trouble talking to the part that helps the car move smoothly. It's like when two friends can't hear each other well over the phone.
The P1795 code indicates a problem with the communication between the vehicle's control modules regarding torque requests over the A-CAN network.
The P1795 code is triggered when there is a faulty signal detected in the driveline communication circuit, specifically related to the A-CAN (Automotive Controller Area Network) torque up request. This could be due to a disruption in the data exchange between the engine control module (ECM) and the transmission control module (TCM), affecting torque management.
• Check Engine Light is on
• Transmission may not shift properly
• Reduced fuel efficiency
• Faulty wiring or connectors in the A-CAN network
• Malfunctioning control module (ECM or TCM)
• Software issues or outdated firmware
A-CAN: Automotive Controller Area Network
ECM: Engine Control Module
TCM: Transmission Control Module
• Use an OBD-II scanner to confirm the P1795 code.
• Inspect the wiring and connectors related to the A-CAN network.
• Check for any software updates or reprogramming needs for the ECM or TCM.
• Repair or replace damaged wiring or connectors.
• Reprogram or update the software in the control modules.
• Replace faulty control modules if necessary.
• OBD-II scanner
• Multimeter
• Diagnostic software tool
$150 - $600
Moderate
• Vehicle 1
• Vehicle 2
• Vehicle 3
• Regular maintenance checks on the vehicle's electrical system
• Ensure software is up to date
• Inspect and clean connectors periodically
Communication Issue
• Avoid driving at high speeds until the issue is resolved.
• Consult a professional mechanic for accurate diagnosis and repair.
Check with your vehicle manufacturer as some components may be covered under warranty.
The P1795 code has been associated with communication issues in vehicles using complex control networks.
Moderate – It is advisable to address this issue soon to prevent further drivability problems.
Ignoring this code may lead to unsafe driving conditions due to transmission issues.
• Vehicle at operating temperature
• Engine running and vehicle in motion
The components involved are usually located in the engine bay and near the transmission.
Q: Can I drive with a P1795 code?
A: It's not recommended as it may affect transmission performance.
Q: How can I prevent a P1795 code?
A: Regular maintenance and software updates can help prevent this issue.
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Universal · Digital multimeter
A solid entry-level multimeter for voltage, continuity, resistance, and basic electrical troubleshooting.
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Universal · Wire connectors and repair kit
Useful when diagnosis points toward damaged wiring, corroded terminals, or connector repairs.
Useful if diagnosis points toward damaged connectors, wiring, or terminal repairs.
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