WebJan 1, 2013 · 2001 Nissan Maxima service engine light stays on code from Auto Zone scanner is PO139 and PO138. What should my next step be to solve this problem. code p 0138 refers to 2 items. 1--heated oxygen sensor (HO2S) 2 bank 1--high voltage ==causes --wiring short to positive --HO2S---ECM. 2--oxygen sensor (O2S) 2 bank 1--high voltage … WebShare. Code P0171 indicates Bank 1 of the engine has a lean fuel mixture. P0174 indicates Bank 2 of the engine has a lean fuel mixture. Engine Bank 1 is the same side of the engine as Engine Cylinder 1. Engine Bank 2 is the opposite side of the engine. A firing order and cylinder location diagram may be needed to see which side of the engine is ...
HO2S Circuit High Voltage Bank 1 Sensor 2 - Engine-Codes.com
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WebJul 8, 2008 · There are two more O2 sensors, one in each exhaust pipe; after the exhaust exits the catalytic converters. Those should be the Bank 2 sensors. The Bank 1 sensors … WebNov 18, 2024 · Also, when I was looking at the parameters with the scan tool, bank 2's long-term fuel trim was consistently +25% when bank 1 was only +5-7%. The short-term trends also followed the same pattern of bank 2 being drastically higher than bank1, though I don't recall what the actual numbers were. ... 1991 Chevy Suburban 1/2 ton 2WD w/ chevy … WebDeciphering the OBD code on my 2008 5.3L Chevy Silverado. Bank 1 sensor 2 went out on me. I'll show you which sensor is which. coverflex silicone lids