View Full Version : 18048 - P1640 on Passat B5 1.8T

06-06-2009, 06:18 PM
I've been trying to eliminate hesitations whilst running under load, sometimes part power sometimes virtually no power. and hunting at idle. So far a 16497 code (G42 IAT too high) has been eliminated by changing the G42 sensor. At the last service the plugs were changed and it seemed to run a bit better but is now back to its old ways. Also the ignition control amplifier has been changed.
Today I've got a new code:
18048 / P1640 Internal Contr.Module (EEPROM) Error

Can the ECU be reflashed with this, or is it likely to be a new ECU?

06-06-2009, 07:40 PM
18048 (P1640) Control unit defective - Replace engine control unit (J220)