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Home >> Dodge and Ram >> 2018 >> Grand Caravan SE Plus, Gas >> Repair and Diagnosis >> External Pages >> Different car >> Section 249 (Emissions Control) >> Description >> Non-Monitored Circuits >> Fuel-Pressure >> Cylinder Compression

Cylinder Compression

WARNING: This page is about a different car, the 2016 Dodge Grand Caravan, 2016 Chrysler Town & Country, 2015 RAM C/V Tradesman, 2015 Dodge Grand Caravan, and 2015 Chrysler Town & Country. However, it is still accessible from the selected car via links, so may be relevant.

The PCM cannot detect uneven, low, or high engine cylinder compression. Low compression lowers O2 content in the exhaust. Leading to fuel system, oxygen sensor, or misfire detection fault.

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