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Showing results for tags 'p0155'.
I recently noticed my check engine light was on, once I scanned it it came up with the codes P0155 and P0300. A while back I had to engine swap my truck, the engine stayed a 5.3 but the year of the motor changed. Before I did any engine work no check engine light was on (this was a couple of months ago, yes I am aware parts break and need replacement but I'm not sure where to start or if its a programming thing). I have only a one year old exhaust system, along with sensors. I have yet to look and see if any connectors or wires have corroded. In terms of misfire, I have all new spark plugs and wires. I know sometimes misfires are also effected by fuel (I replaced my fuel pump awhile ago). It is and older truck (2006). I was curious if it was because I run 87, what 89 might do, etc.
Every once in a while (4-5 times over the past 9 years), I've gotten a P0161 (O2 heater performance Bank 2, downstream, after cat) code, but there's never been anything noticeable as far as runability. I got the P0161 in December and again this week. But, now I'm seeing 2 new codes I haven't ever seen before: P0155 (O2 sensor heater performance Bank 2, upstream) and P1153 (O2 sensor insufficient switching Bank 2, upstream). I figure the P0161's may have just been anomalies in the past, but now that I'm seeing BOTH the P0155 and the P1153 for the upstream sensor that it might be a sign the sensor is malfunctioning. Or, should I just wait and see if it's just another anomaly? If you've gotten P0155 and P1153 codes, did replacing the sensor fix the problem? Description