Codes 401, 171, 174
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Codes 401, 171, 174
Hello. 96 150 5.0 has obd codes PO401, 171, 174. Seems to run fine, but light is on. It does have a "bucking" if you're trying to maintain a lo rpm cruising speed in high gear and light pedal pressure. Step on the gas and you're off just fine. Related? Has AODE, all stock, all sensors original except for an egr valve (I think) on the very back of the engine. Did that one a long time ago. O2's original too, 220,000 miles. Have owned since new, great truck. Thanks for any help!
