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P0161 Diagnostic Trouble Code Discussion for March 2006

Heated Oxygen Sensor (Bank 2 Sensor 2) Heater Performance

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Trouble Ticket Help Requests for DTC P0161
Help Request Posted
1997 Chevrolet K1500 Cheyenne 5.7L Misfire VIN: 2GCEK19R0V
P0161: Heated Oxygen Sensor (Bank 2 Sensor 2) Heater Circuit Malfunction. This vehicle will misfire at idle and inproves off idle. I would suspect broken intake gasket but the plug shows no sign of oil fouling. Can this spider injection system cause a single cyliner misfire? Can there be a vac leak where it will not suck oil from li...
March 01, 2006
2002 Toyota Highlander 2.4L MIL Lamp on VIN: JTEGD21A22
P0161: 02 sensor heater circuit B2S2. Code PO161-oxygen sensor heater circuit, bank 2, sensor 2. When cleared, returns in about 10 miles. There are 4 sensors, 2 above the cat, and 2 below. I think 2 are air fuel sensors. I checked the heater 12 volt and ground on all 4 sensors and all 4 have 12 vo...
March 02, 2006
2001 Jeep Cherokee Sport 4.0L MIL Lamp on VIN: 1J4FF48SX1
P0161: Heated Oxygen Sensor (Bank 2 Sensor 2) Heater Circuit Malfunction. ... this short. old customer-new used jeep sport. customer purchased this jeep with 55k on it. came in 3 months ago p0303. repaired with tsb shielding inj #3. fixed easy. 3 weeks later came in with p0141, and p0161. found heater fuse blown. fixed {i thought} ....
March 10, 2006
2000 Ford F-150 Lariat 5.4L Cuts out, Misfire, MIL Lamp on VIN: 1FTRX17L5Y
P0161: o2s heater fault b2s2. This truck came in with engine stalling. Check codes found multiple codes for o2s, trany and evap systems (13 codes in all). I check computer grounds and powers found good. Check connections found good, fuses are all good.Exhaust back pressure normal. Tune up ...
March 24, 2006