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[Solved] P0128 and P0138. What exactly does those codes mean?

  

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I have a 2004 Chrysler PT Cruiser with 200,000 miles that has a P0128 and a P0138 code. What does those codes mean?


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Posted by: @car1

What does those codes mean?

 

P0128: Coolant Temperature Below Thermostat Regulating Temperature 

https://www.autozone.com/diy/diagnostic-trouble-codes/what-is-trouble-code-p0128

P0138: Oxygen Sensor Circuit High Voltage (Bank 1, Sensor 2)

https://www.autozone.com/diy/diagnostic-trouble-codes/p0138-code-o2-sensor-circuit-high-voltage-bank-1-sensor-2


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