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Cabin blower does not work or works only on maximum speed

Q: How to fix Cabin blower does not work or works only on maximum speed in Nissan Note (E12)?

Replacing the damaged, melted cabin blower fan resistor with a new element (improved parts with higher thermal load capacity are recommended) along with the absolute replacement of the blocked cabin filter with a new activated carbon filter.

in Nissan Note (E12) (2012-2020)

Symptoms

Blower works only on highest speed

DTC error codes

Fresh Air Blower Failure

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Technical diagnosis (Premium)

Recognized technical fault:

Auxiliary controller voltage instability detected

Technical analysis

Detailed analysis of HVAC controller operation parameters, CAN bus data readings, and diagnostic signal waveforms. Purchase PRO access or log in to read the full fault analysis.

Confirmed solution

Complete step-by-step repair procedure including module non-volatile memory reset, sensor calibration, and correct wiring routing. Unlock the full report to see the instruction.

Parts needed

Filters ferrite anti-interference / noise suppressor
Auxiliary starting battery (depending on cell status)

Workshop hacks

Important workshop tips for mechanics regarding bypasses without expensive control module replacement and manufacturer software service bulletins.

TSB / TPI service bulletins

TSB-24-HVAC-01TPI-2068943/2

A/C Technical Specifications

(E12) 1,2 i

Refrigerant: R1234yf Amount (g): 400g Oil: YR20 PAO 68 AA1 Oil (ml): 120ml

(E12) 1,5 dCi

Refrigerant: R1234yf Amount (g): 400g Oil: YR20 PAO 68 AA1 Oil (ml): 150ml

(E12) 1,2 i

Refrigerant: R134a Amount (g): 400g Oil: YR20 PAO 68 AA1 Oil (ml): 120ml

See full specification

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