2002 s10 code (s) p0101 p0154 p0155

Question

I am getting a p0101 code on my 2002 Chevy truck. I am also getting a p0154 and a p0155 code. I have replaced the mass airflow sensor and there is no change in the weak performance. Do I need to replace the Oxygen sensor (s) too? Any suggestions?
BTW, I get a c0269 code too. What's THAT?

Answer 1

P0101 MAF circuit range / performance problem

P0154 02 sensor no activity detected Bank 2 Sensor 1

P0155 02 sensor heater circuit malfunction Bank 2 Sensor 1

C0269 Excessive Dump / Isolation time

C0269 this is for the ABS system where the ABS unit is at faulty, this is more of a internal mechanical issue with the ABS unit.In order to have P0155 and P0154 code this would be a result of having P0101. So the main problem is with P0101 as being at fault. Having a weak performance wil cause P0101, So a mechanical condition need to be looked at, Plugged exhaust can cause P0101 a timing being of (even though there is no timing specification) or engine problem dealing with valves.