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Showing results for tags 'p1153'.
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
I have a 2008 Silverado, 4.8L, 28,xxx miles that is plagued by the DTC P1133. Heated O2 Sensor, Bank 1 Sensor 1 insufficient switching. The truck is totally stock, no mods. No warranty but I replaced both front sensors with new AC Delco OEM, researched, inspected wiring, etc. there are no obvious problems. The left sensor was replaced about 2 years at the dealer & it went away for a while. Cleaned MAF, throttle body, new air filter & more routine stuff. There is no rhyme or reason to when the CEL comes back on. It comes and goes after I clear it, but recently it's been more frequent. I have come across a TSB #08-06-04-045A that reprograms the PCM/ECM that addresses this exact problem. It has to do with higher sulfur content gasoline from lower tier gas companies (for example Walmart/Murphy where I've been getting gas lately) causing codes P1133 & P1153, front O2 sensors. Funny thing too because recently I've been noticing that strong sulfur smell more than I had been from the truck. I've tried name brand "better" gas, fuel system treatments. I've got a call in to the local Chevy dealer where I bought it & am waiting to hear back now. Will hopefully bring it in this week for reprogramming. Guess I'm just wondering if anyone has dealt with this P1133 or P1153 a & the TSB? Any other thoughts? It's driving me nuts. truck runs OK etc. Thanks