Mike's Workshop Manuals
: Service manuals for every vehicle
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Dodge and Ram
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2016
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ProMaster City Base
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Repair and Diagnosis
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Engine Performance
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System
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2.4L - DTCS P2122 To U1504
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DTC Troubleshooting
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P2181-Cooling System Performance
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Set Condition
Set Condition
The coolant temperature should change at a specific rate. If this rate is too slow or too fast this fault will set.