P001A

Code

LAND ROVER P — Powertrain

Intake camshaft profile control circuit (A) / open Bank 1

Brand: LAND ROVER

Type: P — Powertrain

Views: UK: 10 EN: 686 RU: 11

AI status

Completed

ready

Completed 100%

Page language: EN

Causes

Open or damaged wiring between PCM and intake camshaft actuator (Bank 1)
Corroded, loose, pushed-out or damaged connector at the actuator
Faulty intake camshaft solenoid/actuator (stuck or internal open)
Blown fuse or poor power/ground to the solenoid circuit
Poor or intermittent PCM driver output (internal PCM fault)
Low engine oil level, dirty or degraded oil preventing actuator movement

Symptoms

Malfunction Indicator Lamp (MIL) illuminated
Reduced engine power or torque, hesitation or poor drivability
Rough idle or increased vibration
Possible reduced fuel economy
Engine may enter limp-home/reduced power mode on some models
Possible unusual camshaft timing related noises if phaser binding

What to check

Read and record DTC(s) and freeze-frame data with a scan tool
Visually inspect wiring and connector at the intake cam actuator (Bank 1) for damage, corrosion, bent pins, or water intrusion
Check and verify engine oil level and condition; look for sludge or contamination
Verify fuses and power/ground at the solenoid connector with key ON
Backprobe connector and check for expected supply voltage and PCM control signal with a DVOM or scope
Measure solenoid coil resistance and compare to specification

Signal parameters

Supply voltage at solenoid: approx. battery voltage (11–14.5 V) with ignition ON
PCM control: pulsed ground or PWM signal from PCM (duty cycle varies with commanded cam position)
Typical solenoid coil resistance (approximate): 5–40 ohms (consult vehicle spec for exact value)
Expected control signal frequency: PWM usually in the range of tens to a few hundred Hz depending on model
Open-circuit condition: infinite resistance (OL) across solenoid terminals or no PWM signal present at connector

Diagnostic algorithm

Retrieve freeze-frame data and note conditions (engine temp, RPM, oil temp). Confirm DTC P001A is current and not historical only.
Visually inspect the intake camshaft actuator connector and wiring on Bank 1. Repair any physical damage, corrosion, or loose pins.
Check engine oil level and condition; top up with correct grade if low and, if oil is dirty/sludged, plan for an oil change before further electrical tests.
With ignition ON (engine OFF), backprobe the actuator connector: verify battery voltage on the power supply pin and a good ground reference. If no supply, check related fuse and power feed.
Measure solenoid coil resistance with connector disconnected. If resistance is open/infinite or out of spec, replace the solenoid.
With a lab scope or graphing scan tool, verify PCM control signal (PWM) on control pin while commanding VVT operation. If no signal from PCM but wiring is good, test PCM output for short to battery/ground.
Perform a continuity test from the actuator connector to the PCM connector to confirm no open circuit or high resistance. Repair any wiring faults.
If wiring and solenoid test good, command the actuator while monitoring camshaft position and confirm phaser movement. If actuator does not move despite correct electrical signals, inspect cam phaser mechanically and timing chain/belt.
If swapping components is acceptable, you may swap the Bank 1 intake actuator with an identical known-good actuator (or Bank 2 if identical) to confirm a faulty solenoid. Replace defective parts as indicated.
Clear codes, perform verification drive cycle and re-scan to confirm repair. If code returns and wiring/actuator test good, suspect PCM or intermittent wiring; consider professional electrical diagnosis.

Likely causes

Damaged or disconnected wiring/connectors to the intake camshaft actuator (most common)
Failed VVT/solenoid coil (open circuit inside solenoid)
Contaminated oil or low oil pressure preventing actuator movement
Corroded or loose connector at the actuator
PCM output driver fault (less common)

Fault status

⚠️ Status

Intake camshaft profile control circuit (A) — Open — Bank 1. The PCM detected an open or interrupted electrical circuit for the Bank 1 intake camshaft actuator/solenoid.

🟡 Repair difficulty: Medium

⏱️ Diagnostic time: 1.0 - 3.0 hours

Similar codes

Your experience will help others

+100 karma for a short comment :)

Was this AI description helpful?

Your feedback helps improve AI descriptions.

👍 Like 0 👎 Dislike 0

Send to email

P001A — Intake camshaft profile control circuit (A) / open Bank 1