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Reset ECU on Citroen Car

Model: Citroen Citroen Various
Part: Warning light – error code

With the engine running, open the driver's door and lower the window. Pull the bonnet release lever and close the door, then remove the battery cover. Without opening the door, reach through the window to turn off the car. Wait for three minutes. Disconnect the battery by unscrewing the negative terminal and wait for fifteen seconds. Reconnect the battery and wait another ten seconds. Still reaching through the window, turn on the ignition and the side lights. Remove the key, insert it in reverse, and turn it to the engine start position while holding down the lock button. Remove the key, open and close the door. Open and close the lock. Start the engine and refit the battery cover.

Updated on 5 April 2026 by ScegliAuto

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