2021 Nissan Rogue HVAC Vent Temperature Difference

Symptoms

Owners of certain 2021 Nissan Rogue (T33) vehicles may notice a significant Nissan Rogue HVAC vent temperature difference within the cabin. This occurs when the vehicle's automatic air conditioning system, equipped with dual or tri-zone climate control, is set to "Sync" mode (meaning both driver and passenger zones are set to the exact same temperature). Under these conditions, a temperature difference of 5°C (9°F) or greater can be observed between the driver's side (LH) and passenger's side (RH) center dash vents.

Diagnosis and Trigger Conditions

This condition specifically applies to 2021 Nissan Rogue (T33) vehicles equipped with the PR25DD engine. The issue is confirmed if the vehicle has automatic air conditioning with dual or tri-zone systems, and while the driver and passenger dual climate zones are set to "Sync," there is a temperature difference of 5°C (9°F) or more between the driver (LH) side and the passenger (RH) side center dash vents.

Repair Procedure Summary

Addressing the Nissan Rogue HVAC vent temperature difference involves a diagnostic and repair process using the CONSULT-III plus (C-III plus) diagnostic system. The general procedure is as follows:

1. Preparation: Ensure the CONSULT PC has synchronized ASIST updates and all C-III plus software updates are installed. Connect a battery maintainer or smart charger set to reflash mode to prevent voltage drops (below 12.0V) or spikes (above 15.5V) that could damage the A/C Amplifier. Turn off all vehicle electrical loads and external Bluetooth® devices to prevent interruptions during reprogramming.
2. Connect and Identify: Connect the Vehicle Interface (VI) to the vehicle and start C-III plus. Allow the VI to be recognized and confirm the vehicle's VIN or chassis number.
3. System Selection: Select "Re/programming, Configuration" from the CONSULT-III plus menu, then choose "Automatic Selection(VIN)" and confirm the vehicle details. Navigate to the HVAC system.
4. A/C Amplifier Part Number Check: Find and record the current A/C Amplifier Part Number (e.g., 27760-XXXXX). This is crucial for determining the next step.
5. Action Determination: Compare the recorded part number to a reference table. If the last character of the part number is "C," the A/C Amplifier must be replaced. If the last character is "D," the A/C Amplifier can be reprogrammed. If the part number ends in "5A," "7A," "8A," or "E," the A/C Amplifier is already the latest version, and no further action is required under this bulletin.
6. Reprogramming (if applicable): If reprogramming is required, follow the on-screen instructions in C-III plus to update the A/C Amplifier. This involves selecting "USA/CANADA Dealers" and logging in with NNAnet credentials. Once reprogramming is complete, perform an "Erase All DTCs" command.
7. Confirmation: Print the confirmation screen for warranty documentation.

Required Tools or Parts

To perform this repair, technicians will need:

• CONSULT-III plus (C-III plus) diagnostic system with current software updates.
• Vehicle Interface (VI).
• Battery maintainer or smart charger capable of reflash mode.
• AC Adapter for the CONSULT PC.
• Replacement A/C Amplifier (Part Number 27760-XXXXX, specifically 6RY()A, 6RR()C, 6RR()D, 6RY()E) if determined necessary by the part number check.

Important Warnings

• Nissan Bulletins are intended for use by qualified technicians only, not 'do-it-yourselfers.' Qualified technicians have the proper equipment, tools, safety instruction, and knowledge to perform the job safely and correctly.
• If reprogramming does not complete, do not disconnect the VI or shut down C-III plus. Follow the on-screen recovery instructions.
• The "Retry" option during reprogramming may not work on the first attempt and can be selected multiple times.

Owner Action

If you own a 2021 Nissan Rogue and are experiencing a Nissan Rogue HVAC vent temperature difference as described, it is recommended to contact your authorized Nissan dealer. They can diagnose the issue using the CONSULT-III plus system and determine if your vehicle's A/C Amplifier needs reprogramming or replacement according to Technical Service Bulletin NTB21-071B. Do not attempt to diagnose or repair this issue yourself, as specialized tools and training are required.

---

Source: NHTSA ID: 10212003

FAQs

Q: What is the Nissan Rogue HVAC vent temperature difference issue? A: The issue is a noticeable temperature difference of 5°C (9°F) or more between the driver's side and passenger's side center dash vents, even when the dual or tri-zone automatic climate control is set to "Sync" mode in a 2021 Nissan Rogue.

Q: How is the Nissan Rogue HVAC vent temperature difference fixed? A: The fix involves using the CONSULT-III plus diagnostic system to either reprogram or replace the A/C Amplifier, depending on the current part number installed in the vehicle.

Q: What part is involved in the Nissan Rogue HVAC temperature difference repair? A: The primary component involved is the A/C Amplifier, which may need to be reprogrammed or replaced. The part number for the A/C Amplifier is typically 27760-XXXXX, with specific suffixes determining the required action.

Q: Can I fix the Nissan Rogue HVAC temperature difference myself? A: No, Nissan Bulletins like NTB21-071B are specifically for qualified technicians. The repair requires specialized diagnostic tools (CONSULT-III plus) and knowledge to perform safely and correctly, making it unsuitable for DIY repair.