Repaired AdBlue Tank Psa Ds 2.0 HDi

Error Codes:
P20E8 - AdBlue pressure too low

The AdBlue tank with OE code 9818630780 is a fundamental component of the Selective Catalytic Reduction (SCR) system used on PSA group diesel vehicles to comply with Euro 6 emission standards. This module, in addition to containing the AdBlue liquid (urea at 32.5%), integrates an electric pump, level and temperature sensors, and an anti-freeze heating system. The component allows for the correct dosing of the reagent in the exhaust system to reduce nitrogen oxide (NOx) emissions.

Technical features

The OE 9818630780 module consists of a high chemical resistance plastic tank, equipped with actuators and internal probes. The main characteristics include:

• Material: thermoformed plastic for AdBlue containment
• Nominal capacity: variable depending on configuration, generally 14–17 liters
• Electrical power supply: 12 V (for the pump and internal heaters)
• Integrated components: electric pump, filter, heater, level sensor, temperature sensor
• Connections: multi-pin electrical connectors, fittings for supply pipes to the SCR injector

DIPA can intervene to review these spare parts thanks to its experience and expertise.

Functions

The AdBlue OE 9818630780 tank serves to:

• Store the AdBlue liquid under controlled conditions
• Supply the SCR system through an integrated electric pump
• Continuously monitor the liquid temperature to prevent freezing
• Measure and transmit the remaining AdBlue level to the control unit and dashboard
• Ensure constant pressure for precise urea injection into the exhaust gases

The proper functioning of the module is essential for compliance with emission regulations, and a failure can lead to engine performance limitations or starting blockages.

Brand and model on which the part is mounted

Peugeot

• 508

• 508 SW
• 3008
• 308
• 308 SW
• 5008

Citroën

• C5
• C5 Break
• Da4
• DS5

DS

• DS4
• DS5

DIPA recommends always verify compatibility based on the specific engine code and chassis number.

The module is generally positioned under the chassis, near the fuel tank.

Defects and causes

Among the most common defects associated with the OE 9818630780 AdBlue tank are:

• Failure of the internal electric pump: lack of pressure and failure to inject the reagent
• Breakage of the level sensor: reading errors or false signal of empty AdBlue
• Liquid freezing: malfunction of the internal heater
• Error codes related to the SCR system: the control unit inhibits filter regeneration or blocks startup
• Seal leaks: air infiltrations or leaks along the connections

Problems are often related to internal wear, faults in the electronic module, or crystallization of the liquid after long periods of inactivity.

Possible associated DTC codes

• P20E8 – insufficient pressure in the AdBlue circuit

Final conclusions

The PSA OE 9818630780 AdBlue tank is a critical element for the proper operation of the SCR system in Euro 6 diesel vehicles of the PSA group. Its efficiency is crucial to avoid errors in the control unit, performance limitations, or starting blocks.

IPA has a wide range of spare parts: from original to aftermarket components selected among the best manufacturers on the market. Not only that: it offers reconditioned components with performance equal to new, providing savings on replacement and contributing to environmental protection through circular economy. Also ask about the availability of reconditioned parts ready in stock for quick interventions without waiting times.