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Home >> Chevrolet >> 2020 >> Malibu LS >> Repair and Diagnosis >> External Pages >> Different car >> Section 17 (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 Chevrolet Malibu. 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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