Check Engine Light SensorDiagnosis and Replacement

Check engine light sensor diagnosis at PRO SERVICE (Batumi, Airport Highway 212): we test the suspect part with live data and a circuit check, and replace only what is actually faulty. Labor from … GEL per sensor, time 30-90 min depending on access.

What each sensor does and how a failure shows

• Oxygen (O2) — reads the air-fuel mixture. A failing one means higher fuel use, mixture or catalyst codes.
• MAF / MAP — measures how much air enters the engine. Symptoms: hesitation, hunting idle, weak pull.
• Crankshaft position — without its signal the engine will not start or stalls when hot.
• Camshaft position — hard starting, timing codes, limp mode.
• Coolant temperature — hard cold starts, fan never comes on or runs all the time, wrong gauge reading.
• Oil pressure — the oil light flickers or stays on. We check real oil pressure first: the part may be fine and the pressure may not.
• Knock — loss of power, fault code, retarded ignition.
• ABS wheel speed — ABS and ESP lights on; on some cars the speedometer stops working.

Why we do not replace a part by the code alone

A "sensor X" code means the ECU sees an odd signal on that circuit. Maybe the part is dead. Maybe it's the wiring or the connector. Or a real mechanical problem is there and the part reports it honestly, like an O2 code caused by a vacuum leak or misfires. So we:

• Compare live data with normal values for the engine.
• Check the wiring and connector. Corrosion in Batumi's humid climate is a frequent cause.
• Bench-test it where possible.
• Replace it and confirm the code does not return after a test drive.

What affects the price

Part price depends on the model. Labor depends on access. A coolant temperature sensor often takes minutes. Those under the intake manifold or in the gearbox need disassembly. A seized O2 sensor sometimes has to be heated to come out.

Price