What Does P0206 Mean?
This code indicates a malfunction in the fuel injector circuit for cylinder 6. The ECM has detected an electrical fault preventing proper fuel injection to cylinder 6. This code applies to engines with six or more cylinders and indicates the injector is not being driven correctly due to an open, short, or resistance problem.
Common Causes
35%
Defective cylinder 6 fuel injector with failed solenoid coil winding
30%
Corroded, broken, or chafed wiring in the cylinder 6 injector circuit harness
20%
Failed ECM injector driver transistor for the cylinder 6 output
15%
Injector common power supply fault affecting the cylinder 6 bank feed circuit
Diagnostic Steps
1
Step 1: Disconnect the cylinder 6 injector and measure coil resistance. Compare to specification. OL indicates open coil; near-zero indicates shorted coil.
2
Step 2: Verify 12V power at the injector connector power terminal with key on. Trace the power feed if voltage is absent.
3
Step 3: Test for ECM pulse signal at the cylinder 6 connector using a noid light during cranking.
4
Step 4: Swap the cylinder 6 injector with an adjacent cylinder to isolate whether the fault is in the injector or the wiring/ECM.
5
Step 5: Inspect the wiring harness from cylinder 6 connector to the ECM for damage, paying attention to routing near hot exhaust components and sharp brackets.
Estimated Repair Cost
$150 - $650
Parts + labor, varies by vehicle and location
This code indicates a malfunction in the fuel injector circuit for cylinder 6. The ECM has detected an electrical fault preventing proper fuel injection to cylinder 6. This code applies to engines with six or more cylinders and indicates the injector is not being driven correctly due to an open, sho...
The most common cause of P0206 (Injector Circuit Malfunction - Cylinder 6) is: Defective cylinder 6 fuel injector with failed solenoid coil winding
Typical repair costs for P0206 range from $150 to $650, depending on the vehicle, location, and whether you do it yourself or go to a shop.
A non-functioning cylinder 6 injector causes persistent misfire, increased emissions, and potential catalytic converter overheating from unburned fuel in the exhaust stream.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to P0206 to identify the root cause.
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Quick Info
Category
Powertrain
System
Fuel Injection System
Difficulty
Type
Generic (SAE)
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