What are the symptoms of Hissing from vents and slow loss of refrigerant in Dodge Journey?

No cold air from vents. Different temperature on both sides of the cabin. Weak or no heating in winter. No blowing from vents

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Hissing from vents and slow loss of refrigerant

Q: How to fix Hissing from vents and slow loss of refrigerant in Dodge Journey?

COMPRESSOR: Check the coil (approx. 4 ohms), clutch disc and fuse before replacing. EVAPORATOR: Access from the rear of the vehicle by removing the lining. FLAPES: HeaterTreater or metal axle kit. Dodge Journey has a rear evaporator under the floor - a leaking rear evaporator can be repaired by installing a valve blocking the rear circulation (Rear Block-off Kit USD 50-100). Saves PLN 2,000+ on disassembly.

in Dodge Journey (2005-2023)

Symptoms

No cold air from vents
Different temperature on both sides of the cabin
Weak or no heating in winter
No blowing from vents

DTC error codes

Low pressure / Blend door fault

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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

2,4 i/2,0 CRD

Refrigerant: R134a Amount (g): 625g Oil: ND8 PAO 68 lub PAG ISO 46 Oil (ml): 110ml

See full specification

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