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P0420 Set In Open Loop
Code set while in open loop at 190F. I thought this was strange. No drive ability issues or loss of fuel mileage. Converter only has about 14,000 miles on it. Oxygen sensor data seems to indicate converter is working. I thought it had to be in closed loop for ... Login to read more.
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| Engine | 2.4 L |
| Trans | 4-speed Automatic (Electronic) |
Vehicle Data
2006 Chevrolet HHR LT 2.4L
| Engine | 2.4 L |
| Trans | 4-speed Automatic (Electronic) |
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