DTC P0022 – “A Camshaft Position (Bank 2) Timing Over-Retarded

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✅ P0022 – A Camshaft Position (Bank 2) Timing Over-Retarded

Meaning:
The PCM/ECU detects that the intake camshaft (Cam A) on Bank 2 is stuck retarded (not advancing as commanded).
This is usually a VVT system problem.

🔧 Common Causes

These are the most common reasons you will see in real workshop situations:

1. Low / Dirty Engine Oil

Low oil level

Wrong viscosity

Dirty oil causing VVT actuator to stick

2. Faulty Intake VVT Oil Control Valve (OCV) – Bank 2

OCV stuck open

OCV screen clogged

Weak or dead solenoid

3. Stuck / Worn Camshaft Phaser (Bank 2 Intake)

Phaser internal locking pin stuck

Excess sludge inside

4. Timing Chain / Belt Issues

Chain stretched

Worn tensioner

Incorrectly set timing

5. Wiring / Connector Problems

Damaged OCV wiring

Poor continuity

Corroded connectors

6. Poor Oil Pressure

Weak oil pump

Blocked internal oil passage

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🧰 Step-by-Step Diagnosis (Easy & Practical)

Follow this order — it saves time:

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STEP 1 — Check Engine Oil

✔ Oil level
✔ Oil condition (dirty/sludged?)
✔ Correct viscosity

If oil is bad → Replace oil + filter and recheck codes.
This alone fixes 50–60% of P0022 issues.

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STEP 2 — Inspect & Test Bank 2 Intake OCV (VVT Solenoid)

Remove the OCV

Check for sludge blocking the screen

Apply 12V to test solenoid movement

Check for correct resistance (typically 6–12Ω depending on vehicle)

If clogged → Clean
If not moving → Replace

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STEP 3 — Check Camshaft Phaser (Bank 2 Intake)

Symptoms of a bad phaser:

Rattling at startup

Cam angle stuck in scan data

Actual cam angle ≠ commanded angle

Use scanner live data:
Check VVT actual vs commanded. If stuck retarded → Phaser fault.

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STEP 4 — Timing Chain Issue

If vehicle has:

Rattle noise

Advanced/retarded cam readings

History of oil neglect

Check:

Timing marks

Chain stretch

Tensioner movement

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STEP 5 — Electrical Checks (If needed)

Check continuity from ECU → OCV

Check for power and ground

Wiggle test around harness

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🔧 Most Common Fixes

Problem Fix

Dirty/low oil Oil + filter change
Clogged OCV Clean or replace
Bad OCV solenoid Replace
Stuck cam phaser Replace cam phaser
Timing chain stretched Replace chain set
Wiring issue Repair harness

Welcome to madurai car service 💐💐.