P23DA

Cylinder 3 Fuel Heater Control Circuit High

Severity

⚠️ Medium

Can you drive?

Yes, but get it checked soon

Approx. repair cost

$17–56 (est.)

Symptoms

Difficulty starting the engine in cold weather
Unstable engine idling
Increased fuel consumption
Check engine light comes on

Causes

Cylinder 3 fuel heater malfunction
Short circuit in control circuit
Damage to wiring or connectors
Engine control module malfunction

How to Fix

Check the resistance of the cylinder 3 fuel heater
Inspect wiring and connectors for damage
Check control circuit voltage
If necessary, replace the fuel heater
Check and, if necessary, replace the control module

Related codes

P23DB P23DC P23DD