Euro 5 PSA catalytic converter 1.0 1.2 VTi

The catalytic converter with original PSA code 9678127280 is a component designed to clean exhaust gases in PSA Group 1.0 and 1.2 VTi/PureTech Euro 5 and Euro 6 petrol engines. The main function of this device is to reduce harmful emissions by converting polluting gases (carbon monoxide, nitrogen oxides and unburned hydrocarbons) into less harmful substances such as carbon dioxide, nitrogen and water vapor.

The catalytic converter is located near the exhaust manifold and works in combination with the pre- and post-catalyst lambda sensors, which monitor gas composition to adjust fueling in real time. The code 9678127280 corresponds to a complete catalytic unit, often integrated into the first section of the exhaust system.

Technical characteristics

The PSA catalytic converter 9678127280 has the following constructional and functional features:

• Outer structure in stainless steel
• Catalytic substrate in ceramic or metal with an active coating based on platinum, palladium and rhodium
• Flanges or sleeves for upstream and downstream connection
• Provision for two lambda sensors (pre and post)
• Pipe diameter: approximately 50 mm
• Meets Euro 5 or Euro 6 requirements depending on version and application

The component is designed to withstand high temperatures, vibrations and continuous thermal stress, ensuring long operational life when the engine is operated correctly.

DIPA has a range of original and aftermarket spare parts of equivalent quality.

Functions

The main functions of the catalytic converter are:

• Oxidation of carbon monoxide (CO) into carbon dioxide (CO₂)
• Oxidation of unburned hydrocarbons (HC) into CO₂ and water vapor
• Reduction of nitrogen oxides (NOx) into nitrogen (N₂)
• Stabilization of the lambda control system operation

Proper functioning of the catalytic converter is essential to meet environmental regulations and to ensure vehicle type-approval. An efficient catalytic converter also reduces fuel consumption and prevents premature wear of the lambda sensors and the particulate filter (where present).

Vehicle applications

Peugeot

• 108
• 208
• 2008
• 301
• 308

Citroën

• C1
• C3
• C3 Aircross
• C4 Cactus
• C-Elysée
• DS3

DS

• DS3
• DS3 Cabriolet

DIPA recommends always checking the compatibility of the spare part before purchase.

Typical faults

• Clogging of the ceramic substrate: caused by an overly rich mixture, oil consumption or accumulation of carbon deposits
• Mechanical breakage of the internal support: due to impacts, vibrations or thermal fatigue
• Reduced catalytic efficiency: detected by the engine control unit through comparison of the lambda sensors
• Cracks or leaks in welds: leading to noise and loss of performance
• Premature deterioration due to ignition faults: such as faulty injectors or non-functioning spark plugs

These issues lead to a reduction in the environmental effectiveness of the exhaust system, activation of the check engine light and entry into limp-home mode.

Final conclusions

The catalytic converter with OE code 9672883980 is a key component of the emissions control system in PSA vehicles with 1.0 and 1.2 petrol engines, produced between 2012 and 2019. Available in original, aftermarket or certified used versions, it ensures compliance with Euro 5 and Euro 6 regulations.

DIPA supplies the component in new, ready-to-install condition, with warranty and compatibility across all affected models. Ask about stock availability for ready spare parts to enable quick replacements and reduced vehicle downtime.