Cylinder 4 Exhaust Valve Control Circuit High
The P3432 code indicates that the engine control module (ECM) has detected a high voltage condition in the exhaust valve control circuit for cylinder 4. This circuit is part of the variable valve timing (VVT) or cylinder deactivation system, which adjusts valve lift or timing to optimize performance and fuel economy. A high voltage reading suggests a short to power, open circuit, or faulty component, potentially causing improper valve operation and engine performance issues.
01. Most Common Causes
- Faulty exhaust valve control solenoid for cylinder 4
- Short to power in the wiring or connector
- Open circuit in the control circuit
- Damaged ECM or internal fault
02. Symptoms You Will Notice
- Check Engine Light illuminated
- Engine misfire or rough idle
- Reduced engine power or fuel economy
- Possible engine stalling
03. Step-by-Step Diagnosis
Step 1: Use a scan tool to retrieve freeze frame data and verify the code.
Step 2: Visually inspect the wiring and connector for cylinder 4 exhaust valve control solenoid for damage, corrosion, or shorts.
Step 3: Test the solenoid resistance with a multimeter and compare to specifications.
Step 4: Check for voltage at the solenoid connector with the ignition on; if voltage is present when it shouldn't be, trace the short to power.
Step 5: If wiring and solenoid are okay, test the ECM output circuit; replace ECM if necessary.
04. Commonly Affected Makes
05. Frequently Asked Questions
Is it safe to drive with this code?▼
It is not recommended to drive with this code as it can cause engine misfire, reduced performance, and potential damage to the catalytic converter or engine.
How much does it cost to fix?▼
The cost to fix P3432 typically ranges from $50 to $150 for diagnosis and repair, depending on the cause and labor rates.