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451 Lambda Sensor Removal

Mod Details
PremiumNo Difficulty Mod ID1708 Creditevilution For451 Fortwo Linkhttps://www.evilution.co.uk/mod/451-lambda-sensor-removal.htm Copy to Clipboard

Euro 4 Lambda Exhaust

Remove the rear panels and the crash bar. Spray both lambda sensors with PlusGas before attempting to remove with a 22mm spanner. The upstream sensor in in the upper elbow.

The 2nd is in the silencer. This uses the same 22mm spanner.

Disconnect the wiring to the upstream lambda sensor, this is easiest to access by opening the engine flap in the boot. The connection has a clip that is pushed in, the plug then pulls out.

Do the same on the downstream lambda sensor.

Undo the sensors. Anticlockwise (counterclockwise) to remove them. Replacement codes can be found here.

Euro 5 Exhaust Lambda Sensors

Remove the rear panels and the crash bar. Spray both lambda sensors with PlusGas before attempting to remove with a 22mm spanner. The upstream sensor in in the upper elbow. The 2nd is in the silencer. This uses the same 22mm spanner.

Disconnect the wiring to the upstream lambda sensor, this is easiest to access by opening the engine flap in the boot. The connection has a clip that is pushed in, the plug then pulls out.

Do the same on the downstream lambda sensor.

Undo the sensors. Anticlockwise (counterclockwise) to remove them. Replacement codes can be found here.