Lexus Error Code P0012: How to Fix It

Medium 2-6 hours High Severity Verified June 2026
Error Code
P0012
Brand
Lexus
Product Type
automotive
Severity
High
DIY Difficulty
Medium
Estimated Fix Time
2-6 hours
The P0012 error code in your Lexus indicates that the intake camshaft timing on bank 1 is over-retarded, meaning the camshaft is rotating slower than expected. This timing issue can cause rough idling, reduced power, and poor fuel economy. The problem is typically caused by low oil pressure, dirty oil, faulty VVT solenoid, or stretched timing chain components.
Ad

Tools You'll Need

How to Fix Error Code P0012

  1. Check engine oil level and condition

    Ensure engine is cool before checking oil to avoid burns.
  2. Inspect VVT solenoid connector

    Disconnect the battery before working with electrical connections.
  3. Test VVT solenoid resistance

  4. Check oil pressure

    Wear safety glasses when working with pressurized oil systems.
  5. Inspect timing chain and guides

    This is a complex repair requiring engine timing knowledge. Mark all timing positions before disassembly.
  6. Clear codes and test drive

Parts You May Need

Engine oil and filter
Check Price on Amazon
Timing chain kit
Check Price on Amazon
Oil pressure sensor
Check Price on Amazon
Engine oil and filter
Check Price on Amazon
Timing chain kit
Check Price on Amazon
Oil pressure sensor
Check Price on Amazon
Engine oil and filter
Check Price on Amazon
Timing chain kit
Check Price on Amazon
Oil pressure sensor
Check Price on Amazon
Engine oil and filter
Check Price on Amazon
Timing chain kit
Check Price on Amazon
Oil pressure sensor
Check Price on Amazon
Engine oil and filter
Check Price on Amazon
Timing chain kit
Check Price on Amazon
Oil pressure sensor
Check Price on Amazon
Engine oil and filter
Check Price on Amazon
Timing chain kit
Check Price on Amazon
Oil pressure sensor
Check Price on Amazon
Engine oil and filter
Check Price on Amazon
Timing chain kit
Check Price on Amazon
Oil pressure sensor
Check Price on Amazon
Engine oil and filter
Check Price on Amazon
Timing chain kit
Check Price on Amazon
Oil pressure sensor
Check Price on Amazon
Ad

When to Call a Professional

Call a professional mechanic if oil pressure is low and requires internal engine repair, if timing chain replacement is needed (requires specialized tools and timing knowledge), or if you're uncomfortable working with engine timing components. Timing chain replacement can cost $1500-3000 and requires engine disassembly.

Frequently Asked Questions

Can I drive my Lexus with P0012 code?
You can drive short distances to a repair shop, but avoid extended driving. The timing issue can cause engine damage if left untreated, and you may experience rough idling, stalling, or reduced power.
How much does it cost to fix P0012 error code?
Repair costs vary: oil change ($50-100), VVT solenoid replacement ($150-300), timing chain replacement ($1500-3000). Most P0012 codes are resolved with oil service or solenoid replacement.
What causes P0012 code in Lexus vehicles?
Common causes include dirty or low engine oil, faulty VVT solenoid, low oil pressure, stretched timing chain, or clogged oil passages in the camshaft. Regular oil changes help prevent this issue.
Will P0012 code clear itself?
No, P0012 will not clear itself. The underlying mechanical or electrical issue must be repaired, then the code cleared with an OBD2 scanner. The problem will persist until properly diagnosed and fixed.
Is P0012 the same as P0022?
No, P0012 affects bank 1 intake camshaft while P0022 affects bank 2 intake camshaft. P0012 is more common in V6 engines. Both codes indicate camshaft timing issues but on different cylinder banks.