Lambda Sensor Bosch Fiat Alfa Romeo Jeep

The lambda sensor with original code FCA 55283961 is a key component for emissions control and combustion management in diesel engines. Used on a wide range of vehicles within the FCA group, this sensor plays an essential role in regulating the air-fuel mixture.

Technical characteristics of the 55283961 lambda sensor

This lambda sensor belongs to the category of heated sensors of the planar type or wideband (broadband). Its main technical characteristics include:

• Thread: M18×1.5
• Type: heated, with integrated heating element
• Number of pins: 5 or 6, depending on the variant and vehicle wiring
• Sensor type: wideband lambda sensor, particularly suitable for modern diesel engines
• Cable length: variable, typically between 275 mm and 720 mm
• Connection: oval or multi-pin D-type connector

Vehicle applications

Alfa Romeo

• Giulietta

Fiat

• 500L
• 500X
• Doblo'
• Tipo, Tipo SW and three-volume models

Jeep

• Renegade 1.6 and 2.0 Multijet

DIPA recommends always carefully verifying the spare part code against the vehicle's chassis number (VIN).

Typical faults

• Engine warning light (MIL) on
• Increased fuel consumption
• Reduced performance
• Elevated emissions
• Unusual exhaust odor
• Irregular idle

Possible causes

• Contamination from oil or additives
• Damage to the protective coating
• Wiring or connector issues
• Wear of the heating element
• Sensor failure due to thermal shock or vibrations

Conclusions

DIPA provides new, original and aftermarket components of equivalent quality, ready for installation, with warranty and compatibility across all affected models. Ask about parts availability in stock for fast replacements and reduced vehicle downtime.