High Priority 90% confidence

A/C cooling is weak and gradually loses performance

Q: What are the symptoms of A/C cooling is weak and gradually loses performance in Nissan X-Trail (T32)?

Weak cabin cooling. Air conditioning works intermittently. No blowing from vents. Blower works only on highest speed

Q: How to fix A/C cooling is weak and gradually loses performance in Nissan X-Trail (T32)?

Evaporator frostbite. Diagnosis involves checking the readings of the evaporator temperature sensor. Repair requires replacing the damaged evaporator thermistor with a new, properly calibrated element or implementing a software update/replacement of the air conditioning amplifier module (A/C Auto Amp) with a newer version that controls the operation of the compressor in safe cycles.

in Nissan X-Trail (T32) (2013-2019)

Symptoms

Weak cabin cooling
Air conditioning works intermittently
No blowing from vents
Blower works only on highest speed

DTC error codes

DTC evaporator oblodzenie

Verifying license...

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

(T32) 1,6 D dCi

Refrigerant: R1234yf Amount (g): 500g Oil: ND12 PAO 68 AA1 lub PAG ISO 46 YF Oil (ml): 110ml

(T31) 2,0 i/2,5 i/2,0 D dCi

Refrigerant: R134a Amount (g): 450g Oil: PAG PAO 68 lub PAG ISO 46 Oil (ml): 150ml

2,0 i/2,5 i/2,2 Di/2,2 D dCi

Refrigerant: R134a Amount (g): 500g Oil: KLHOO-PAGSO/ Nissan Type S PAO 68 lub PAG ISO 46 Oil (ml): 180ml

See full specification

Have this problem?

Generate a personalized AI report for your Nissan X-Trail (T32) or book a workshop visit.

Generate AI report Schedule visit