P0598 on Dodge
Thermostat Heater Control Circuit Low
P0598 on Dodge vehicles indicates thermostat heater control circuit low. Au7o has documented this code across 1 Dodge model — most commonly on Caliber. This code applies to engines with an electronically controlled (heated) thermostat and means the Powertrain Control Module detected an abnormally low voltage in the thermostat heater control circuit. The heater element lets the computer fine-tune coolant temperature for efficiency and emissions by opening the thermostat sooner under certain conditions. P0598 sets when the control or feedback circuit reads lower than expected (often a short to ground or loss of supply). It is found mainly on certain European makes (BMW, Mercedes, VW/Audi, etc.) and usually has little effect on driving. Typical repair costs on Dodge range from $100 to $800, depending on the specific model and root cause.
Common Causes of P0598
- •Faulty electronically controlled (map-controlled) thermostat
- •Short to ground in the heater control wiring
- •Corroded or loose thermostat connector
- •Open or damaged wiring in the control circuit
- •Low coolant level overheating the thermostat heater
- •Blown fuse or poor power supply to the circuit
- •Faulty PCM control driver
P0598 on Dodge by Model
Dodge Caliber(1 issue)
- Engine Overheating - Multiple Causes2007-2012
Calibers are prone to overheating from radiator fan failure, thermostat sticking, water pump failure, and radiator clogging. Same cooling system shared with Jeep Compass/Patriot (PM/MK platform). Fan relay failure is the most common single cause.
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View P0598 across all makes →Frequently Asked Questions
What does P0598 mean on Dodge?▼
P0598 stands for "Thermostat Heater Control Circuit Low." This code applies to engines with an electronically controlled (heated) thermostat and means the Powertrain Control Module detected an abnormally low voltage in the thermostat heater control circuit. The heater element lets the computer fine-tune coolant temperature for efficiency and emissions by opening the thermostat sooner under certain conditions. P0598 sets when the control or feedback circuit reads lower than expected (often a short to ground or loss of supply). It is found mainly on certain European makes (BMW, Mercedes, VW/Audi, etc.) and usually has little effect on driving. On Dodge specifically, this code is documented across 1 model.
What causes P0598 on Dodge vehicles?▼
Common causes on Dodge: Faulty electronically controlled (map-controlled) thermostat, Short to ground in the heater control wiring, Corroded or loose thermostat connector, Open or damaged wiring in the control circuit, Low coolant level overheating the thermostat heater. Specific causes vary by model and year — see the per-model sections below.
How much does it cost to fix P0598 on a Dodge?▼
Repair costs on Dodge range from $100 to $800, depending on the specific model and root cause.
Which Dodge models have P0598 documented?▼
Au7o has documented P0598 on 1 Dodge model: Caliber.