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A Toyota FJ Cruiser arrived for repairs. The dashboard displays a garland of ABS VSC CHECK ENGINE malfunction indicators, anti-skid, anti-skid, anti-lock braking systems, and engine malfunction indicators. Toyota FJ Cruiser repair and diagnostics. Diagnostics using the Launch, Diazone, Kingbolen, Ediag, Diagzone, Ediag, Thinkcar, thinkdig scanner showed error number p0606 malfunction of the PCM processor of the engine control unit, increased current. The errors were reset and the car was sent for testing, when picking up speed, these errors appeared again. But there was also an accompanying error for the second lambda probe, incorrect readings. Such a malfunction may appear due to incorrect operation of the lambda probes, the second oxygen sensors, which are installed after the catalytic converter. During the check, oxidation of one of the connectors of the second oxygen sensor of the first row of cylinders was detected. It was decided to reflash the car using the programmer alientech KESS3 and transfer it to the Euro-2 standard, then physically disconnect the connectors on the oxygen sensor, while it was discovered that there were electronic tricks on them. After that, the car was diagnosed and no more errors were detected. After zeroing the errors, the garland on the dashboard went out and did not appear again.