02 sensors
#1
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i have a 99 d that keeps throwing up po132 and po138 i have replaced both sensors and checked all my connections at least three times. any ideas what it might be. also i have a vibration at about 35 but it goes away the faster or slower i go. could i have a tire out of balance?? any ideas would be very helpful, kinda stressin out about this. just bought it about 2 weeks ago. hopefully its not something that is very expensive.... Thanks
#2
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#8
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I had the P138 code pop up and I waited a while to replace the sensor. I was just being lazy but I did have the code ran. Well after about 30 days I forgot the code and I went back up to autozone to get it, and to buy the sensor. When they ran the codes this time I had two codes, the P138 and a new P601.
The P601 says, ECM internal fault, probable causes...
1- SHORTED INPUT SENSOR
2- Shorted electrical circuit
3- Failed ECM
I replaced the sensor that went bad (P138) and then reset the PCM. After about 10 minuted the check engine light came back on so I ran up to Autozone. The P138 was gone but the P601 was still on. Now, 6 months later, the P601 is still on.... Thats where my problem has led me and I cant figure it out...
The P601 says, ECM internal fault, probable causes...
1- SHORTED INPUT SENSOR
2- Shorted electrical circuit
3- Failed ECM
I replaced the sensor that went bad (P138) and then reset the PCM. After about 10 minuted the check engine light came back on so I ran up to Autozone. The P138 was gone but the P601 was still on. Now, 6 months later, the P601 is still on.... Thats where my problem has led me and I cant figure it out...