P25CE

Code

Generic P — Powertrain

Intake Camshaft Actuator Park Lock Control Circuit Low Bank 2

Brand: Generic

Type: P — Powertrain

Views: UK: 23 EN: 33 RU: 20

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Page language: EN

Causes

Faulty intake camshaft actuator / VVT solenoid (park lock circuit)
Short to ground in park-lock control wiring or connector
Poor or corroded connector or terminal at the actuator or PCM
Blown fuse or missing power/ground in the VVT system (depending on design)
Internal PCM/ECM driver fault
Mechanical binding or seized cam phaser, stuck park lock

Symptoms

Check Engine MIL illuminated
Reduced engine performance or limp mode (timing control limited)
Rough idle or hesitation during acceleration
Possible abnormal engine noise from timing cover area
Stored camshaft/engine timing related diagnostic trouble codes

What to check

Read freeze-frame and live data with a scan tool; note actuator status and related camshaft codes
Visual inspection of wiring harness and connector at intake actuator (Bank 2) for damage, pin corrosion, or oil intrusion
Check engine oil level and condition; very dirty or low oil can affect VVT operation
Inspect related fuses, power supply, and engine grounds
Backprobe the actuator connector and measure voltage/resistance while commanding the actuator with a scan tool
Perform wiggle test on harness while monitoring signal to check intermittent faults

Signal parameters

Park-lock control circuit voltage: low condition < ~1 V when driven low (varies by vehicle)
Supply voltage to actuator: ~9–14 V (with ignition ON/commanded ON) depending on vehicle design
Typical actuator coil resistance: commonly ~6–30 ohms (vehicle-specific — consult OE spec)
Control signal duty cycle or PWM when commanded: variable (check live data with OEM scan tool)
No continuity to ground on supply side (if designed as high-side supply), continuity to PCM low-side driver expected when activated — verify against vehicle wiring diagram

Diagnostic algorithm

Verify the code with an OBD-II scan tool and record freeze-frame data. Check for multiple camshaft or oil-pressure related codes.
Check engine oil level and condition; correct oil if low or contaminated before further electrical diagnosis.
Perform a visual inspection of the Bank 2 intake actuator connector and wiring for damage, corrosion, oil ingress, or rodent chew.
Using a multimeter, with ignition ON (engine OFF), measure for reference supply and ground at the actuator connector. Compare to vehicle-specific values.
Command the actuator ON/OFF with a bidirectional scan tool while monitoring voltage at the connector. Note command vs actual response.
Measure coil resistance at the actuator (unplugged). If resistance is out of OE spec or infinite/shorted, replace actuator.
Check continuity between the actuator control pin and PCM pin for short to ground or open circuit. Repair wiring as needed.
If wiring checks good, bench-test or swap the actuator with a known good unit (if identical) to isolate the actuator from PCM/wiring.
If actuator and wiring are good but fault persists, inspect cam phaser mechanically for seizure/stuck park lock (may require removal/inspection of timing components).
If all external checks pass and wiring/actuator are correct, suspect PCM driver failure — confirm with manufacturer guidance before replacement.
After repair, clear codes and perform a driven test, re-scan for return of code and verify proper VVT operation via live data.

Likely causes

Faulty camshaft actuator (electrical coil or internal park-lock)
Damaged or shorted wiring between actuator and PCM (short to ground)
Poor connector contacts or corrosion at actuator plug
Oil contamination or sticking of the actuator or phaser

Fault status

⚠️ Status

Intake Camshaft Actuator Park Lock Control Circuit Low — Bank 2. PCM detected low voltage/short on the park-lock control circuit for the Bank 2 intake camshaft actuator.

🟡 Repair difficulty: Medium

⏱️ Diagnostic time: 1.0-3.0 hours