Exhaust Mercedes Citan (2012-2021)

The Mercedes Citan exhaust system mainly comprises the exhaust manifold, diesel particulate filter (DPF), exhaust gas recirculation (EGR) valve, exhaust flaps, and differential pressure sensors. These elements work together to control emissions and ensure optimal engine performance in this diesel vehicle.

Common problems include clogging of the DPF leading to failed regeneration, malfunctioning differential pressure sensors causing error codes like P2463, EGR valve faults causing power loss after 50,000 to 70,000 km, defective exhaust flaps triggering engine warnings, and random error messages linked to the DPF or EGR system.

DPF clogging typically requires professional cleaning and forced regeneration using diagnostic tools such as Topdon or iCarsoft. Specialized cleaning products like Xenum can assist. In severe cases, complete replacement of the DPF is necessary.

• Use cleaning additives to aid soot removal
• Perform forced regeneration via OBD diagnostic equipment
• Replace the DPF if cleaning fails

Regular maintenance and avoiding short trips help prolong DPF life.

A faulty differential pressure sensor typically triggers engine warning lights and error codes such as P2463. Drivers may notice reduced engine performance or irregular engine running. The sensor is especially prone to failure on engines like the OM651/1.8L in certain Mercedes Citan models.

• Check engine light activation
• Error code P2463 logged in diagnostics
• Loss of power or engine irregularities

Replacing the Bosch sensor (around €90) following careful removal steps usually resolves the issue.

The EGR valve often requires inspection or replacement after 50,000 to 70,000 km due to carbon buildup causing power loss and engine warning lights. Alongside the EGR valve, associated injectors and sensors should be checked for proper operation to ensure full system health.

• Notable loss of engine power
• Engine warning lights related to emissions
• Post-50,000 km maintenance interval

Proper maintenance prevents further exhaust system issues.

Several detailed step-by-step guides and video tutorials are available online for DIY repair or replacement of exhaust components like the exhaust manifold and differential pressure sensor. These resources often include necessary tools, removal tips, and safety precautions.

• Illustrated guides for changing the exhaust manifold
• Forum discussions with repair videos and pictures
• Diagnostic tool walkthroughs for forced DPF regeneration

Always ensure compatibility with your vehicle’s engine and VIN before starting repairs.

Providing the vehicle’s VIN or original part references helps confirm compatibility of exhaust components like the DPF or differential pressure sensor. Most manufacturers and suppliers offer technical support, installation manuals, and assistance via email to ensure correct fitting and function.

• Check product fitment using your Mercedes Citan’s VIN
• Request detailed installation manuals
• Contact supplier technical support for guidance

Using professional diagnostic and repair advice minimizes risk of errors.

New exhaust parts such as DPFs and catalytic converters offered by reputable European manufacturers come with a 3-year warranty limited to 100,000 km of use. Free returns are generally accepted within 30 days for unused products in original packaging, subject to supplier conditions.

• 3-year warranty against manufacturing defects
• Free returns accepted within 30 days if unused
• Warranty requires professional installation and proper maintenance
• Misuse or negligence voids warranty coverage

Always retain proof of purchase and installation invoices for warranty claims.