What does it mean?
P3432 is a Powertrain (engine, transmission, fuel system) fault code. It indicates: Cylinder 4 Exhaust Valve Control Circuit High . This is a standardised OBD-II code. The technical definition is the same regardless of the make or model of vehicle, although specific causes and symptoms can vary between vehicles.
Symptoms
- MIL (check engine lamp) on and the variable exhaust valve strategy locked out
- Poor pull at higher rpm and a generally lifeless feel
- Slightly rough idle and an uneven exhaust note
- Valve train ticking that does not change with commanded switching
- Fuel consumption above normal
- Cylinder 4 misfire codes may be stored with it
Likely causes
- Control wire shorted to a battery-fed circuit inside the engine loom
- Open or corroded ground return leaving the driver output floating at supply voltage
- Open coil inside the exhaust valve control solenoid so the circuit never loads
- Oil-fouled, corroded or loose terminals in the solenoid connector
- Connector or wiring damaged by exhaust heat near the cylinder head
- Failed output driver inside the PCM (powertrain control module), only after the wiring proves good
How to fix it
- Note freeze frame conditions and attempt to reproduce the fault with the scan tool commanding the solenoid
- Inspect the connector for oil, corrosion, heat distortion and terminal tension
- Back-probe the control circuit with the key on and compare with a healthy solenoid on the same bank
- Disconnect solenoid and module, then check the control wire for a short to any power feed
- Measure the solenoid coil resistance; an open coil alone will set a high circuit code
- Confirm the ground return path is clean and tight
- Repair the harness or renew the solenoid, then verify switching with commanded output tests