What does the P0019 fault code mean?
The P0019 fault code, applicable to all car manufacturers, means “Crankshaft Position – Camshaft Position Correlation (Bank 2, Sensor B)”.
Background Information: The crankshaft converts the up-and-down motion of the pistons into rotational motion. The camshaft controls the opening and closing of the valves. The Electronic Control Unit (ECU) continuously monitors the timing position of the variable camshaft, checking the relative position between the camshaft and crankshaft. If the relative position is misaligned by more than one gear tooth, this fault code will appear. Possible causes include a faulty camshaft position sensor or its circuitry, a faulty crankshaft position sensor or its circuitry, a faulty engine speed sensor, contaminated engine oil, or a stuck variable camshaft solenoid valve.
Symptoms of P0019 Error Code
- Engine malfunction indicator light illuminates
- Difficulty starting the engine
- Unstable engine idle
- Loss of power, poor throttle response
- Increased fuel consumption
- Unusual noises from the engine compartment (e.g., chain rattling)
- Engine may stall
Main Causes of P0019 Error Code
- Timing chain stretch or wear
- Variable valve timing (VVT) issues
- Camshaft position sensor (CMP) malfunction
- Crankshaft position sensor (CKP) problems
- Oil contamination or low oil pressure
- Damaged or improperly installed crankshaft pulley
- Electrical problems in the sensor circuit (open circuit, short circuit)
- Phase shifting system (VVT) problems: stuck valves, solenoid valve malfunction
P0019 Error Code in Different Vehicles
P0019 in BMW: This error is common in N52/N54 engine models. It is usually caused by chain stretching and guide wear. VVT component phase and condition checks are required.
P0019 in Ford: Models with EcoBoost engines are at risk. The error may be caused by oil contamination, stuck VVT valves, or solenoid valve malfunction.
P0019 in Mercedes-Benz: It is most common in M272/M273 engines. Causes include gear wear, chain stretching, and balance shaft failure.
P0019 in Chevrolet: Applicable to Ecotec series engines. The main causes are contaminated solenoid valves and VVT sensors, and insufficient oil pressure.
P0019 in Hyundai: In GDI engines, this fault may occur when there is a lack of oil or a VVT system malfunction. Regular oil changes and sensor checks are recommended.
How to Diagnose P0019 Error Code?
Step 1: Read the error codes using an OBD2 scanner, record all current and stored codes.
Step 2: Check the condition and level of the engine oil.
Step 3: Check the connectors and wiring of the CKP and CMP sensors for damage.
Step 4: Check the performance of the sensors using a multimeter or oscilloscope.
Step 5: If necessary, perform a mechanical inspection of the timing system (check markings, tensioner, and chain).
| Possible Causes | How to Check？ |
|---|---|
| Extended timing chain | Check ignition, tension, and markings |
| CMP/CKP sensor malfunction | Measure the signal with an oscilloscope, or replace with a known good signal |
| Oil contamination or lack of oil | Check oil level and condition |
| VVT solenoid valve malfunction | Check power output and resistance |
| Incorrect phase setting after engine repair | Compare phase markings and correct |
Tools needed: OBD2 diagnostic scanner, multimeter, oscilloscope (preferred), mechanical tools (for removing timing cover), compression gauge (optional)
How to fix P0019 error code? (Solutions to the problem)
Simple troubleshooting methods
- Reset the error code and see if it reappears
- Change engine oil and filter
- Clean sensor connectors from contaminants
- Check wiring and eliminate short circuits
In-depth diagnostic and repair solutions
- If the timing chain and tensioner are worn, replace them
- Check and correct timing phase
- Replace crankshaft and camshaft position sensors
- Flush or replace VVT system solenoid valve
- Repair or replace timing components
Troubleshooting by symptoms
| Symptoms | Possible solutions |
|---|---|
| Difficulty starting, engine vibration | Check and replace CKP/CMP sensors |
| Starting noise | Check chain tensioner, gear wear |
| Increased fuel consumption | VVT diagnosis, timing phase check |
| Check engine light on with no obvious symptoms | Check and replace sensors, clean connectors |
P0019 Code Frequently Asked Questions
Can you drive with error code P0019?
No, prolonged operation of a vehicle with error P0019 can lead to damage to the valve timing, resulting in serious engine damage.
What happens if I ignore error P0019?
Ignoring the error can lead to timing component failure, loss of power, unstable engine operation, or even engine failure.
Is it possible to reset error P0019 without fixing the cause?
You can reset the fault code with a car scanner or by disconnecting the battery, but if the cause of the fault is not eliminated, the error will reappear.
Is urgent repair necessary when code P0019 appears?
Yes, it is recommended to diagnose and repair as soon as possible to avoid serious engine damage.
Related OBD2 Errors:
P0016 – Crankshaft Position – Camshaft Position Correlation (Bank 1, Sensor A)
P0017 – Crankshaft Position – Camshaft Position Correlation (Bank 1, Sensor B)
P0018 – Crankshaft Position – Camshaft Position Correlation (Bank 2, Sensor A)
Important! If your car starts to shake, run erratically, or stall unexpectedly, this may be a symptom of error P0019. Starting the engine in this condition may worsen the situation. Do not delay diagnosis when error P0019 occurs. The sooner the cause is eliminated, the greater the chance of avoiding expensive engine repairs. Always start by checking the oil and sensor condition, then proceed with more in-depth mechanical diagnostics.