What Does P0208 Mean?
This code indicates a malfunction in the fuel injector circuit for cylinder 8. The ECM has detected an open, short, or resistance fault in the cylinder 8 injector driver circuit. This code is specific to V8, V10, and V12 engine configurations. Cylinder 8 fuel delivery is compromised, causing a misfire on that cylinder.
Common Causes
35%
Defective cylinder 8 fuel injector with internal coil failure
30%
Wiring or connector fault at the cylinder 8 injector, often caused by heat exposure from the nearby exhaust manifold or catalytic converter
20%
ECM injector driver circuit failure for the cylinder 8 output
15%
Shared injector power feed circuit fault affecting the bank containing cylinder 8
Diagnostic Steps
1
Step 1: Disconnect the cylinder 8 injector connector and measure coil resistance across terminals. Compare to manufacturer specification (11-17 ohms typical for high-impedance).
2
Step 2: Verify 12V power supply at the injector connector with key on engine off.
3
Step 3: Connect a noid light to the cylinder 8 connector and crank the engine to verify ECM pulse signal presence.
4
Step 4: Swap cylinder 8 injector with an adjacent cylinder on the same bank. Clear codes, run the engine, and check if the code follows the injector.
5
Step 5: Inspect wiring harness to cylinder 8 for heat damage, chafing, and connector corrosion. Cylinder 8 is typically at the rear of the engine where heat buildup is greatest.
Estimated Repair Cost
$160 - $700
Parts + labor, varies by vehicle and location
This code indicates a malfunction in the fuel injector circuit for cylinder 8. The ECM has detected an open, short, or resistance fault in the cylinder 8 injector driver circuit. This code is specific to V8, V10, and V12 engine configurations. Cylinder 8 fuel delivery is compromised, causing a misfi...
The most common cause of P0208 (Injector Circuit Malfunction - Cylinder 8) is: Defective cylinder 8 fuel injector with internal coil failure
Typical repair costs for P0208 range from $160 to $700, depending on the vehicle, location, and whether you do it yourself or go to a shop.
A misfire on cylinder 8 dumps unburned fuel into the exhaust, risking catalytic converter overheating. Reduced power output affects overall vehicle performance.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to P0208 to identify the root cause.
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Quick Info
Category
Powertrain
System
Fuel Injection System
Difficulty
Type
Generic (SAE)
Recommended Tools
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