P0014 on a 2017 Toyota Tacoma

What does P0014 mean on a 2017 Toyota Tacoma?

P0014 is set when the engine control module commands the Bank 1 exhaust camshaft to a specific advance position and the actual cam position does not match within tolerance. On engines with dual-cam VVT (intake + exhaust phasers), P0014 is the exhaust-side counterpart of P0011. The cause is almost always the same family of failures: a stuck oil control valve, dirty oil starving the phaser, or the phaser itself failing.

Symptoms on a 2017 Toyota Tacoma

• Check Engine Light is illuminated
• Rough idle, particularly when the engine is hot
• Reduced low-end torque and slow throttle response
• Increased emissions at idle
• Possible engine stalling at low RPM
• Slight reduction in fuel economy
• Cold-start rattle from the cam area

Likely causes on a 2017 Toyota Tacoma

1. Stuck or sludged exhaust-side VVT oil control valve Most common
   Estimated repair: $100– $450
2. Low engine oil level or pressure starving the exhaust cam phaser Most common
   Estimated repair: $50– $200
3. Sludged oil passages from skipped maintenance Common
   Estimated repair: $100– $600
4. Failed exhaust cam phaser / VVT actuator Common
   Estimated repair: $600– $1,800
5. Stretched timing chain affecting exhaust cam position Occasional
   Estimated repair: $800– $3,000
6. Damaged exhaust cam sensor wiring or connector Occasional
   Estimated repair: $80– $350

How to diagnose this on a 2017 Toyota Tacoma

1. Confirm oil level, condition, and pressure first

   VVT systems are oil-powered. Verify level is at full on a level surface with a warm engine, oil is clean (not dark or sludgy), and viscosity matches the OEM spec. Measure oil pressure with a mechanical gauge — typical 15–25 psi at idle, 40–60 psi at 2500 RPM. Low pressure must be fixed before chasing VVT parts.

   Tools: Mechanical oil pressure gauge, Dipstick / level check

2. Read live exhaust cam position vs. commanded position

   Scan-tool live data shows commanded and actual cam position. Watch while bidirectionally commanding cam advance. A working system tracks within 1–2 degrees of command. Lag of 5 degrees or oscillation points at the actuator or oil control valve.

   Tools: Bidirectional scan tool with cam position PIDs

3. Inspect and clean the exhaust-side oil control valve

   Remove the exhaust-side OCV. Check the inlet screen for sludge or metal debris. Bench-test with 12 V — the valve should click and open. Air should pass freely when energized and seal when de-energized. A sticking valve causes the most common P0014.

   Tools: Socket set, Brake cleaner (NOT MAF-safe), 12 V test source, Compressed air

4. Listen for cam phaser noise at startup

   A failing exhaust phaser often rattles at cold start for 1–3 seconds. Use a mechanic's stethoscope at the front of the cylinder head. The noise stops as oil pressure builds. Continuous rattle indicates advanced phaser wear.

   Tools: Mechanic's stethoscope

5. Verify timing chain integrity (specific engines)

   On engines with documented chain wear (BMW N20/N26, Ford 5.4 3V, VW EA888, GM 3.6 LFX), the phaser cannot fully advance once the chain has stretched — P0014 sets even with a perfect phaser. Check live cam-crank correlation drift under load.

   Tools: Scan tool with cam-crank correlation

Common fixes

• Change engine oil and filter with the correct OEM viscosity
• Clean or replace the exhaust-side VVT oil control valve
• Replace the exhaust cam phaser / actuator assembly
• Replace stretched timing chain and components as a kit
• Repair damaged cam sensor wiring

About the 2015-2019 Toyota Tacoma

The 2015-2019 Toyota Tacoma was commonly sold with the following powertrains: 2.7L I4, 3.5L V6, 4.0L V6. Common trims include SR, SR5, TRD Sport, TRD Off-Road, Limited.

Related diagnostic codes

• P0011
• P0012
• P0013
• P0015
• P0021
• P0024
• P0016
• P0017