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How to change lambda sensor on TOYOTA Celica VI Convertible (T200) – replacement guide
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Recommended replacement interval for the part category Lambda sensor : 100000 km
Important!
This replacement procedure can be used for:
TOYOTA CELICA Convertible (AT20_, ST20_) 2.0 GTi (ST202), TOYOTA CELICA Convertible (AT20_, ST20_) 2.0 i 16V (ST202) … View more
The steps may slightly vary depending on the car design.
TOYOTA CELICA Convertible (AT20_, ST20_) 2.0 GTi (ST202), TOYOTA CELICA Convertible (AT20_, ST20_) 2.0 i 16V (ST202) … View more
The steps may slightly vary depending on the car design.
This video shows the replacement procedure of a similar car part on another vehicle
All the parts you need to replace – Lambda Sensor for CELICA Convertible (AT20_, ST20_) and other TOYOTA models
Lambda sensor
Socket, lambda probe
Socket, lambda probe
Socket, lambda sensor

Wire brush
WD-40 spray
All-purpose cleaning spray
Electronic spray
High-temperature ceramic grease
Torque wrench
Flare nut wrench #22
22-mm oxygen sensor socket
Thread tap
Ratchet wrench
Flat screwdriver
Nippers
Crimping pliers
Heat gun
Fender cover
Replacement: lambda sensor – TOYOTA CELICA Convertible (AT20_, ST20_). AUTODOC experts recommend:
- After replacing the oxygen sensor, clear the trouble code from the electronic control unit and let the ECU adapt itself to the new sensor.
- All work should be done with the engine stopped.
- Please note: all work on the car – TOYOTA CELICA Convertible (AT20_, ST20_) – should be done with the engine switched off.
Carry out replacement in the following order:
- Step 1Open the hood.Step 2Use a fender protection cover to prevent damaging paintwork and plastic parts of the car.Step 3Detach the oxygen sensor connector.
- Step 4Unfasten the clamp to release the oxygen sensor wiring harness. Use a flat screwdriver.
- Step 5Clean the oxygen sensor fastener. Use a wire brush. Use WD-40 spray.
- Step 6Unscrew the oxygen sensor fastener. Use a flare nut spanner #22. Use a ratchet wrench.
- Step 7Remove the oxygen sensor.
- Step 8Cut the thread for the new oxygen sensor. Use a thread tap. Use a ratchet wrench.
- Step 9Clean the oxygen sensor mounting seat. Use all-purpose cleaning spray.Replacement: lambda sensor – TOYOTA CELICA Convertible (AT20_, ST20_). Professionals recommend:In this case, the connector needs to be removed from the old oxygen sensor and installed on a new one.
- Step 10Cut off the connector from the old oxygen sensor. Use nippers.
- Step 11Shorten the wires of the old oxygen sensor connector in such a way that each successive wire is shorter than the previous one. Use nippers.
- Step 12Shorten the wires of the new oxygen sensor in a corresponding way. Use nippers.Replacement: lambda sensor – TOYOTA CELICA Convertible (AT20_, ST20_). AUTODOC experts recommend:Follow the colour coding of the wires. If it does not match, see the manufacturer's instructions for the correct connection order.
- Step 13Strip the wires of the connector and the new sensor. Use nippers.
- Step 14Place the heat shrink tubing on the oxygen sensor wiring.
- Step 15Using solder sleeves, splice the oxygen sensor wires with the connector wires according to the colour coding.
- Step 16Crimp the solder sleeves. Use crimping pliers.
- Step 17Shrink the heat shrink tubes of the solder sleeves. Use a heat gun.
- Step 18Slide the heat shrink tubing you put in place earlier over the wire connection.
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