What Does P3415 Mean?
The PCM has detected voltage in the cylinder 2 exhaust valve control circuit that is lower than expected specifications. This indicates an electrical fault causing insufficient voltage to operate the valve control system properly.
Common Causes
35%
High resistance in ground circuit or poor ground connection at solenoid
25%
Partially shorted exhaust valve control solenoid windings
20%
Corroded connector pins causing high resistance
15%
Damaged wiring with increased resistance in power or ground circuit
5%
Weak PCM driver circuit output
Diagnostic Steps
1
Step 1: Measure voltage at cylinder 2 exhaust valve control solenoid connector with key on and PCM commanding solenoid on; should read battery voltage
2
Step 2: Check ground circuit resistance from solenoid to battery negative; should be less than 0.5 ohms
3
Step 3: Inspect and clean all connector terminals and ground connection points
4
Step 4: Disconnect solenoid and measure resistance; compare to specifications (typically 6-12 ohms)
5
Step 5: Perform voltage drop test on both power and ground circuits while operating solenoid to identify high resistance points
Estimated Repair Cost
$100 - $700
Parts + labor, varies by vehicle and location
The PCM has detected voltage in the cylinder 2 exhaust valve control circuit that is lower than expected specifications. This indicates an electrical fault causing insufficient voltage to operate the valve control system properly.
The most common cause of P3415 (Cylinder 2 Exhaust Valve Control Circuit Low) is: High resistance in ground circuit or poor ground connection at solenoid
Typical repair costs for P3415 range from $100 to $700, depending on the vehicle, location, and whether you do it yourself or go to a shop.
Safe to operate but may experience reduced performance and fuel economy. Continued driving may result in catalytic converter damage from improper combustion.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to P3415 to identify the root cause.
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Quick Info
Category
Powertrain
System
Variable Valve Timing/Cylinder Deactivation System
Difficulty
Type
Generic (SAE)
Recommended Tools
OBD2 Scanner
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