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Home >> Chevrolet >> 2018 >> Spark LT, Automatic CVT Trans >> Repair and Diagnosis >> External Pages >> Different car >> Section 161 (Engine Cooling System) >> Diagnostic Information and Procedures >> DTC P00B7, P0597-P0599, or P2181 - E41 Engine Coolant Thermostat Heater Malfunction >> Diagnostic Fault Information

Diagnostic Fault Information

WARNING: This page is about a different car, the 2019 Buick Cascada, 2018 Buick Cascada, and 2017 Buick Cascada. However, it is still accessible from the selected car via links, so may be relevant.
Circuit Short to Ground Open/High Resistance Short to Voltage Signal Performance
Ignition P0597, P0598* P0597, P0598 - P00B7, P2181
Control P0598 P0597 P0599 P00B7, P2181
*Additional DTCs may set.
Mechanical Condition

Component DTC Condition
E41 Engine Coolant Thermostat Heater P00B7, P2181 Slow Response/Stuck
Coolant P00B7, P2181
  • Antifreeze Concentration - Incorrect
  • Degraded
  • Fill Level - Low
Coolant Hose P00B7 Collapsed/Restricted
Cooling Fan P2181 Always On
Engine P00B7
  • Cylinder Head - Cracked / Restricted
  • Engine Block - Cracked / Restricted
Radiator P00B7, P2181
  • Flow Restricted - Air/Coolant
  • Pressure - Incorrect
    • Coolant - Leaking
    • Fill Cap - Loose
Water Pump P00B7
  • Belt - Loose/Missing/Visible Damage
  • Propeller - Visible Damage
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