What Does P3472 Mean?
The PCM has detected a high voltage condition in the control circuit for cylinder 9's exhaust valve. This typically indicates a short to voltage or an open circuit preventing proper valve control.
Common Causes
35%
Open circuit in exhaust valve control solenoid winding
30%
Wiring harness short to voltage (battery or ignition)
20%
Disconnected or broken electrical connector at valve solenoid
10%
Failed PCM unable to pull circuit low
5%
Oil contamination causing internal solenoid failure
Diagnostic Steps
1
Step 1: Inspect wiring and connector at cylinder 9 exhaust valve solenoid for damage, disconnection, or signs of short to power
2
Step 2: Disconnect solenoid connector and measure resistance across solenoid terminals; open circuit indicates failed solenoid
3
Step 3: With connector disconnected, check for voltage at harness side; should read 0V with key on (PCM pulls to ground)
4
Step 4: Test wiring from PCM to solenoid for short to voltage using multimeter
5
Step 5: If circuits test normal, verify PCM ground circuits are intact and test PCM operation with bi-directional scan tool commands
Estimated Repair Cost
$150 - $850
Parts + labor, varies by vehicle and location
The PCM has detected a high voltage condition in the control circuit for cylinder 9's exhaust valve. This typically indicates a short to voltage or an open circuit preventing proper valve control.
The most common cause of P3472 (Cylinder 9 Exhaust Valve Control Circuit High) is: Open circuit in exhaust valve control solenoid winding
Typical repair costs for P3472 range from $150 to $850, depending on the vehicle, location, and whether you do it yourself or go to a shop.
Safe to drive short distances but may cause misfires, reduced performance, and increased emissions. Extended driving may damage catalytic converter.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to P3472 to identify the root cause.
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Quick Info
Category
Powertrain
System
Variable Valve Timing System
Difficulty
Type
Generic (SAE)
Recommended Tools
OBD2 Scanner
A quality scan tool helps you read codes, view live data, and clear faults.
