P23D2

Cylinder 1 Fuel Heater Control Circuit High

Severity

⚠️ Medium

Can you drive?

Yes, but get it checked soon

Approx. repair cost

$17–56 (est.)

Symptoms

Check Engine light comes on
Problems starting the engine in cold weather
Uneven engine operation
Reduced engine power
Increased fuel consumption

Causes

Short circuit in heating circuit
Malfunction of the heating element of cylinder 1
Wiring harness damage
Relay or fuse problems
Engine control unit malfunction

How to Fix

Check the fuses and relays of the heating circuit
Inspect the wiring harness for damage
Check the resistance of the heating element
Check control circuit voltage
If necessary, replace the heating element

Related codes

P23D0 P23D1 P23D3