P3414

Code

Generic P — Powertrain

Cylinder 2 Exhaust Valve Control Circuit Performance

Brand: Generic

Type: P — Powertrain

Views: UK: 28 EN: 35 RU: 25

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Causes

Open, short to ground, or short to battery in the cylinder 2 exhaust valve actuator wiring or connector
Corroded, loose or damaged connector at the actuator or ECM
Faulty exhaust valve actuator / solenoid (stuck, electrically open or shorted)
Low oil pressure or contaminated oil causing valve actuator sticking (oil-controlled systems)
Internal valve train mechanical fault (stuck/excessive friction, carbon build-up)
Faulty ECM/driver circuit or poor ground at the ECM

Symptoms

Check Engine Light (MIL) illuminated
Rough idle or misfire indications on cylinder 2
Reduced engine power or hesitant acceleration
Poor fuel economy
Possible abnormal valvetrain noise
Failed emissions test

What to check

Read and record all stored and pending DTCs and freeze-frame data with a scan tool
Perform a visual inspection of wiring, harness, and connectors at cylinder 2 exhaust valve actuator and ECM
Check engine oil level and condition (contamination or low oil can affect oil-actuated systems)
Backprobe actuator connector and observe signal while commanding actuator with scan tool (voltage/PWM, duty cycle, ground)
Measure actuator coil/solenoid resistance with multimeter (compare to OEM spec)
Check continuity and resistance between actuator connector and ECM pin; inspect for shorts to ground or battery

Signal parameters

Command signal: PWM or switched output from ECM (duty cycle varies with command; typically 0–100% of battery voltage)
Expected resting voltage at actuator connector with key ON (varies by design; often 0 V on switched side, battery voltage on supply side)
Typical solenoid/actuator resistance: often in the 5–30 ohm range (consult OEM spec for exact value)
Expected current draw when energized: commonly 0.2–2.0 A depending on actuator; measure and compare to spec
No open circuit (infinite resistance) or direct short to battery/ground should be present

Diagnostic algorithm

Retrieve freeze-frame and live data. Note engine conditions when code set (RPM, temp, oil temp, commanded valve state).
Visually inspect the actuator, connector and wiring for damage, corrosion, loose pins or oil contamination.
Clear codes and attempt to reproduce while monitoring live data for the cylinder 2 exhaust valve command and any related parameters.
Backprobe the actuator connector. With the engine running or using a bi-directional test, command the actuator and verify the ECM output (voltage/PWM and ground).
Remove actuator and measure coil resistance at the actuator. Compare to OEM spec. If open or shorted, replace actuator.
Check continuity between the actuator connector and ECM pin. Check for shorts to battery or ground. Repair any wiring faults found.
If wiring and actuator are good, apply a fused 12 V test bench supply to the actuator per safe workshop procedure to confirm mechanical operation (observe movement/noise).
Inspect oil passages and oil condition if the actuator is oil-controlled. Correct low oil or contamination issues and replace actuator if contaminated.
If all above tests pass, inspect related valvetrain components (cam phaser, lifters) for mechanical binding or wear.
If wiring, actuator and mechanical checks are OK, suspect ECM driver failure. Verify with OEM diagnostic tests before replacing ECM; follow manufacturer procedures for ECM replacement and programming.

Likely causes

Damaged wiring or poor connector at the cylinder 2 exhaust valve actuator
Failed exhaust valve actuator/solenoid for cylinder 2
Contaminated or low oil causing actuator not to respond
ECM output driver fault (if wiring and actuator test good)

Fault status

⚠️ Status

P3414 — Cylinder 2 Exhaust Valve Control Circuit Performance. The ECM detected abnormal performance/response from the exhaust valve actuator/solenoid for cylinder 2 (electrical or mechanical response out of expected range).

🟡 Repair difficulty: Medium

⏱️ Diagnostic time: 1-3 hours