2012 Chevrolet Cruze P2096 and P0597 Error Codes: Causes and Solutions After Coolant Leak Repair
My 2012 Chevrolet Cruze LS is displaying error codes P2096 (Post-Catalyst Fuel Trim System Low Limit) and P0597 (Engine Coolant Thermostat Heater Control Circuit). The vehicle runs normally, but these codes appeared after I repaired a coolant leak by replacing a hose. I'm seeking advice on the possible causes of this issue. Thanks for your help.
Depending on mileage, this could fall within warranty coverage. P0597 is often related to the thermostat—though it's more complex than traditional units. P2096 indicates that the post-catalyst fuel trim voltage is lower than what the Powertrain Control Module (PCM) expects; live data scanning is essential to identify contributing factors. Contamination of connectors by coolant is a known possibility, as referenced in GM PI-0375.