P23C7

Fuel Heater Control Module Power Control Circuit/Open

Severity

⚠️ Medium

Can you drive?

Yes, but get it checked soon

Approx. repair cost

$17–89 (est.)

Symptoms

Difficulty starting the engine in cold weather
Increased exhaust smoke
Reduced engine power at low temperatures
Check Engine Light Illuminates
Unstable engine operation in the cold

Causes

Broken wiring in the power supply circuit of the fuel heating module
Malfunction of the fuel heating module
Problems with the relay or circuit fuse
Short circuit in the circuit
Poor contact in connectors

How to Fix

Check the integrity of the fuses and relays of the circuit
Inspect the wiring for damage
Check the connectors of the fuel heating module
Test the fuel heating module
Replace faulty components

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