About Trouble Codes

Diagnostic Trouble Code (DTC) Table


NOTE:
- The following table lists all DTCs recognized by the Climatronic control module 4255- and displayed/printed out by VAG 1551 Scan Tool (ST).
- If malfunctions occur only occasionally or if the DTC memory was not erased after repairs, these DTCs are displayed as sporadic, ("SP" appears in the display).
- DTCs appear only on print-out.
- Where applicable, an indication of possible malfunction types may also appear below the DTC code and identified component or signal description.
- After performing repairs, DTC memory should always be checked again and erased with VAG 1551 Scan Tool.
- Before replacing components, always test the relevant positive and Ground connections as well as all harness connectors and wiring between the component indicated to be malfunctioning and the Climatronic control module. Refer to the wiring diagram.
- If a customer complaint is verified and no DTCs are stored in memory:
- select "Output Diagnostic Test Mode (DTM)" (scan tool function 03) Output Diagnostic Test Mode (DTM) (Function 03)
- select "Read Measuring Value Block" (scan tool function 08) Reading
- perform Climatronic troubleshooting. Digital Climate Control (Climatronic), Troubleshooting