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Code 1521
How does the PCM determine the oil viscosity is correct? This code was stored P1521; before changing to the correct [...] engine is a 5.7 L with MDS! Login to read more. 
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| Engine | 5.7 L |
| Trans | 5-speed Automatic (Electronic) |
Vehicle Data
2010 Jeep Commander Limited 5.7L
| Engine | 5.7 L |
| Trans | 5-speed Automatic (Electronic) |
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