Faulty bank 2 sensor B camshaft position sensor or its wiring; Faulty crankshaft position sensor or its wiring; Contaminated or sludged engine oil affecting variable valve timing operation; Sticking or failed variable valve timing solenoid or phaser; Timing chain or belt stretched or incorrectly installed; Engine control module software issue or faulty module

DTC codes / P00xx · Fuel and air metering and auxiliary emission controls / P0019

P0019Crankshaft Position - Camshaft Position Correlation (Bank 2 Sensor B)

P0019 means the engine computer detected a mismatch between the crankshaft position sensor and the bank 2 sensor B camshaft position sensor, so the two signals are not lining up as expected. The computer uses these signals to control variable valve timing, and it sets this code when the correlation falls outside the allowed range.

SystemPowertrain

Code typeGeneric (all makes)

SeverityMedium

Fix difficultyProfessional

AreaFuel and air metering and auxiliary emission controls

Symptoms you may notice

Illuminated check engine light, often with no other noticeable symptoms
Rough idle or engine misfire, especially when cold
Reduced engine power or poor acceleration
Decreased fuel economy
Engine may stall or hesitate during acceleration
Unusual engine noises such as ticking or rattling from the valvetrain

Common causes, most likely first

Faulty bank 2 sensor B camshaft position sensor or its wiring
Faulty crankshaft position sensor or its wiring
Contaminated or sludged engine oil affecting variable valve timing operation
Sticking or failed variable valve timing solenoid or phaser
Timing chain or belt stretched or incorrectly installed
Engine control module software issue or faulty module

How to diagnose and fix it

Check engine oil level and condition; change oil and filter if contaminated or overdue
Inspect camshaft and crankshaft position sensor connectors and wiring for damage or corrosion
Use a scan tool to compare live camshaft and crankshaft position data for erratic signals
Test the bank 2 sensor B camshaft position sensor and crankshaft position sensor with a multimeter or oscilloscope
Remove and inspect the variable valve timing solenoid for debris or sticking; clean or replace as needed
Verify timing chain or belt alignment and condition; replace if stretched or damaged
Reprogram or replace the engine control module if all other components test good

Oil quality and sensor correlation traps

Dirty or incorrect viscosity oil is a leading cause of this code because it disrupts variable valve timing phaser operation and sensor correlation.
A weak battery or charging system can cause erratic sensor signals and set this code without any sensor being faulty.
The code may appear after an engine repair where the timing chain was not properly aligned, even if all sensors are new.
Some vehicles use the same part number for bank 1 and bank 2 camshaft sensors, so swapping them can help confirm a faulty sensor before replacement.
A failing crankshaft position sensor can set this code along with misfire codes, so always check both sensors and their wiring.

Can I keep driving with P0019?

You can usually drive the vehicle short distances to a repair shop, but avoid heavy acceleration, towing, or long trips because the engine may enter limp mode or stall unexpectedly. If the engine runs rough or loses power, stop driving and have it towed to prevent damage.

Tools that help

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Guidance is general and written for all OBD-II vehicles. Exact tests and values vary by model, so confirm the fault before replacing parts.