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P0161 Diagnostic Trouble Code Discussion for June 2004

Heated Oxygen Sensor (Bank 2 Sensor 2) Heater Performance

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Trouble Ticket Help Requests for DTC P0161
Help Request Posted
1999 Ford F-150 XL 4.2L Poor Idle Quality, Hesitation, Stall, Misfire, MIL Lamp on VIN: 2FTZX1721X
P0161: dn str h02s b2 heater ckt malf. HI. truck was towed in. come in with mil-on, missing all the time, wont shift, over drive light flishing and just wont go from stop. ck for codes, scope ck. ck fuel psi. ck ground voltage drop. on scope ck all cyl are running lean. ck tsb. fround tsb#99-19-7. ...
June 10, 2004