Renault Kadjar Catalytic Converter (2015-2022)

A catalytic converter in the Renault Kadjar is a device designed to reduce harmful exhaust emissions. It chemically transforms toxic gases like hydrocarbons (HC), carbon monoxide (CO), and nitrogen oxides (NOx) into less harmful substances such as water (H₂O), carbon dioxide (CO₂), and nitrogen (N). It uses precious metals like platinum, palladium, and rhodium to accelerate these oxidation-reduction reactions. Positioned close to the engine for optimal temperature (around 420°C), it ensures maximum efficiency and prevents clogging. The Kadjar models typically have a standard catalytic converter, often paired with a Diesel Particulate Filter (DPF) on diesel engines for trapping soot and carbon.

The most common diagnostic trouble code related to the catalytic converter on a Renault Kadjar is P0420. This code indicates "Catalytic Converter Efficiency Below Threshold" for bank 1 and triggers the engine warning light. Symptoms include increased emissions pollution and a lit engine check light. The fault is generally confirmed by downstream (post-catalytic) lambda sensor readings if no other engine faults like ignition misfires or defective coils and sensors are present.

Yes, there is an official recall (A12/01096/20) involving the Renault Kadjar and Megane IV models concerning the catalytic converter. The recall addresses insufficient filtering of nitrogen oxides (NOx), a cause of excessive pollution. Owners should check with Renault for a free intervention to correct this issue.

Replacing the catalytic converter on the Renault Kadjar involves several steps that can be undertaken by experienced DIYers or professionals:

• Scan for diagnostic codes—especially P0420.
• Lift the vehicle safely and access the exhaust system.
• Remove sensors such as lambda sensors before detaching the catalytic converter.
• Undo clamps, collars, and possibly lower the subframe or cradle, disconnecting steering components carefully.
• Replace the catalytic converter and associated gaskets and collars with OEM or high-quality compatible parts.
• Reassemble everything in reverse order, ensuring sensor positions and exhaust joints are secure and correctly oriented.

Proper handling of lambda sensors and using copper connections where applicable is important to maintain the integrity of the exhaust system.

The cost of depot and reinstallation of the catalytic converter on a Renault Kadjar, including pollution system checks and lambda sensor replacement, generally ranges between €500 and €1000 depending on engine type and workshop. The price of a new OEM or equivalent catalytic converter part itself varies roughly between €300 and €800, exclusive of labor and VAT.

Krosfou offers brand-new, high-performance original equipment manufacturer (OEM) quality catalytic converters for Renault Kadjar vehicles. These products are manufactured in Europe with stainless steel INOX 409 and high-grade monolith ceramic or metallic substrates coated with precious metals for superior durability and emission control. Krosfou catalytic converters carry a 3-year warranty covering up to 100,000 km of use and comply with strict European regulations.

• Manufactured with advanced emission reduction technology.
• Designed specifically for Renault Kadjar engine types including TCe petrol and dCi diesel variants.
• Supplied with technical support, fast shipping options, and free returns within 30 days for unused products.
• Replacement lambda sensors recommended for optimal performance and compliance.

Ordering from Krosfou provides a reliable and guaranteed solution for catalytic converter replacements that preserve vehicle performance and environmental standards.

Catalytic converters are valuable because they contain precious metals like platinum, palladium, and rhodium which catalyze chemical reactions that reduce harmful emissions. Using OEM-quality catalytic converters ensures that the replacement conforms to the original engine specifications regarding flow, durability, and emission compliance.

• High-quality catalysts ensure effective reduction of HC, CO, and NOx emissions.
• Properly designed converters maintain engine performance and fuel efficiency.
• OE equivalent parts reduce the risk of warranty voidance and regulatory non-compliance.
• Quality replacements prevent premature clogging or damage, extending the vehicle’s operational life.

Opting for substandard or non-OEM catalytic converters may result in insufficient emission control, possible engine warning lights, and costly repairs down the line.

Additional information about Renault Kadjar catalytic converters can be accessed through various technical websites, detailed DIY tutorials, official Renault manuals, and community forums. Recommended sources include:

• Official Renault Kadjar user manuals (e.g., 2020 edition) for general maintenance and pollution control checks.
• Online guides and video tutorials demonstrating catalytic converter diagnostics and replacement specific to Renault 1.4/1.6 engines applicable to Kadjar.
• Technical blogs explaining the catalytic converter function, lambda sensor roles, and troubleshooting common codes like P0420.
• Recall notifications and manufacturer advisories from Renault for NOx emission issues.

For purchasing catalytic converters, industry-leading suppliers offering direct factory products with warranties and fast delivery provide reliable options. Use diagnostic tools like OBD scanners for accurate troubleshooting and consult professional mechanics for complex repairs.