2001 Dodge Dakota Q&A
2001 Dodge Dakota Question: check engine light
The code P0155 does call for the O2 sensor, bank 2 sensor 1. It is likely to fix your problem. If the circuit for the heater oxygen sensor is good then your light should stay off. It's a very common problem on it. - Prestige Auto Works
Maybe....P0155 indicates a problem in the O2 heater circuit on the upstream bank 2 sensor. Most commonly the heater circuit opens up in the O2 and the PCM can't complete the ground. Other possibilites include no 12 volt power to the heater, poor connections, bad grounds, or PCM. A pinpoint diagnostic test will nail it down. - Precision Automotive Repair
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