Oxygen sensor code P0135 (or P0030) Bank 1, sensor 1
What is your question?
I have changed out the sensor twice and still have the failure code. At first the code was P0031, which was the heater. Twice now the replacements indicate the O2 sensor. How should I proceed?
How long has your 2008 Volvo S60 had this problem?
Months now
1 Reply
Popular Answer
DaveJMon May 25, 2021
The codes never mean the sensor has failed. The codes indicate a concern within the related circuit that needs troubleshooting performed. You could have a wiring issue, or perhaps some other input negatively influencing the affected circuit. I would recommend seeking professional assistance, unless you want to invest in all needed test equipment and workshop manuals. www.repairpal.com/repair-shops
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