Ошибка P0154: отсутствие активности 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. P0154 is the bank 2 counterpart of P0134: the sensor delivers no moving signal and the control module only sees its own bias voltage. On GM's 3.0/3.6 V6 the code is set when the signal stays at 350–550 mV after heater warm-up, within about 15 s, in closed loop after 150 s of running; two trips. Ford's Bosch wide-band systems have used P2240 instead since 2011. A failed heater (P0155) can also lead to this code. A stored code usually switches mixture control to open loop and suspends adaptation and converter monitoring.