Ошибка P0152: высокий сигнал датчика кислорода (лямбда-зонд, банк 2, датчик 1)

The oxygen sensor before the catalytic converter on bank 2 (sensor 1) is the main control sensor for the mixture. It is either a switching sensor (about 0.1 V lean to 0.9 V rich) or a wide-band sensor that works with a pump current evaluated by an interface chip. Bank 2 exists only on engines with two exhaust manifolds. P0152 is the bank 2 counterpart of P0132. Switching sensors: GM above 1050 mV (100 of 125 samples, after warm-up), Ford above 1.1 V for 10 s – a reading the sensor cannot produce itself, so heater or battery voltage on the signal wire is the usual cause; GM also reads an open wire as high. Wide-band sensors: a sensor wire shorted to voltage. P0152 together with P0158 points to a shared short in the bank 2 harness. Two trips. A stored code usually switches mixture control to open loop and suspends adaptation and converter monitoring.