P1777 – Jaguar DTC

Jaguar DTC P1777 – CAN data bus, torque reduction – malfunction

DTC P1777 meaning on Jaguar

1. DTC P1777 refers to a CAN data bus, torque reduction malfunction in Jaguar vehicles.

Jaguar DTC P1777 symptoms

• Loss of power or acceleration.
• Transmission shifting issues.
• Check Engine Light (CEL) illuminated on the dashboard.

Jaguar DTC P1777 causes

• Faulty CAN communication within the vehicle network.
• Problems with the torque reduction system.
• Issues with the transmission control module.

Jaguar DTC P1777 seriousness

1. The DTC P1777 can affect the performance and drivability of the vehicle.
2. If left unresolved, it may lead to further damage to the transmission system.

How to diagnose DTC P1777 on Jaguar

1. Use a diagnostic scanner to retrieve the trouble codes stored in the vehicle’s computer.
2. Inspect the CAN communication system for any faults or loose connections.
3. Check the torque reduction system for proper operation.

How to fix DTC P1777 on Jaguar

1. Repair any faults in the CAN communication system.
2. Address any issues with the torque reduction system.
3. Replace or reprogram the transmission control module if necessary.

How to erase DTC P1777 on Jaguar

1. After fixing the underlying issue, use a diagnostic scanner to clear the trouble codes from the vehicle’s computer.
2. Ensure that the repair has resolved the problem before erasing the DTC.

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