Oct 21, 2004 · The code was read to be P1151 which I know is one of the O2 sensors. Both upstream sensors are just over a year old. I am also noticing a delayed acceleration when …

Sep 15, 2009 · P1151 Lack of Upstream Heated Oxygen Sensor Switch - Sensor Indicates Lean - Bank No. 2 The PCM is constantly looking for O2 sensor outputs crossing 0.45 volts. Rich is …

Nov 1, 2021 · Hello everyone. I am puzzled by this problem I am having with the oxygen sensor code P1151 in my 4.0. I'm experiencing a slight miss when idling only when I come to a …

Jun 6, 2008 · Rebuilt '99 Explorer 5.0 in a '98 Ranger Supercab. TM headers, 1-inch spacer, true dual Flowmaster exhaust, Henson tune. I'm getting DTC P1151 AND P1152 at the same time. …

Apr 5, 2004 · Ok, code reader says P1131 and P1151. I changed the PCV valve again, for now put electrical tape all over that elbow between PCV and manifold just to be safe and ensure if …

Feb 1, 2010 · I need some help, 1998 Explorer 4.0 SOHC with 172K miles. I'm getting error codes, p1151 Lack of HO2S21 Switch-Sensor indicates lean p1152 Lack of HO2S21...

Jun 21, 2010 · Still receiving p1151 code after 02 replacement..Also have unplugged hoses.. READ

Nov 8, 2011 · The p1151 and p0174 are connected, but I believe it is due to a bad wire--connection ( check the 02 sensor harness) , or PCM. p1151=lack of 02 sensor switching.

Jan 13, 2014 · I have 2000 Explorer EB v8 with about 200k miles. I'm getting a P1151 code; points to the upstream bank 2 O2 not switching (drivers side). I replaced both upstream O2 …

Feb 4, 2009 · A few weeks later I get the DTC P1151 code (Lack of upstream HO2S switch, sensor indicates lean (bank #2), and I have also noticed that a small amount of engine coolant …