Citroen C4 1.6 HDi ECU (Engine Management) – Part No: 9663476380 / 0281012981
Common Faults:

• No control to the injectors.
• Other CAN bus participants reports communication problems with the ECU.
• No communication with ECU possible / error code reading not possible.
• P060B A/D processing internal control module – Malfunction.
• P0606 Control unit – NA.
• P0403 EGR (valve/output stage) – NA.
• P0402 Exhaust-gas re-circulation – Amount excessive.
• P0401 Exhaust-gas re-circulation – Amount insufficient.
• P0400 Exhaust-gas re-circulation – NA.
• Exhaust control valve without function / EGR is not activated / Various error codes possible.
• P1613 – control unit – Internal error / P1602 Immobilizer / P1000 OBD system tests / P1604 EPROM data defective.
• Other fault on request.

Part Numbers:

• Citroen Part Number – 9663476380
• Bosch Part number – 0281012981