Peugeot Citroen HDI Injector Coding

Supported coding features by PSACOM diagnostic tool https://www.obdtester.com/psacom

HDI Injector Coding

What it does

• Codes individual HDI diesel injectors to the engine ECU
• Matches injector calibration codes (IMA / C2I) with ECU
• Ensures precise fuel injection and balanced engine operation

When it is required

• After replacing one or more injectors
• After engine control unit replacement
• After injector swap between cylinders
• When injector-related fault codes are present

Conditions that must be met

• Engine OFF, ignition ON
• Stable battery voltage
• Correct injector codes available
• Diagnostic tool connected
• No active critical fuel system fault codes

What happens during coding

• Injector calibration codes are entered per cylinder
• ECU stores correction values for:
• Injection quantity
• Timing accuracy
• Emission control
• Engine ready for precise fuel delivery

If coding is not performed

• Rough engine operation
• Increased fuel consumption
• Higher emissions
• Misfire or injector fault codes

After coding

• Start engine and check idle smoothness
• Verify injector correction values in live data
• Test drive to confirm proper performance
• Clear any related fault codes