P0019

What the Code Means

Code P0019 indicates a mismatch between crankshaft position and camshaft position (Bank 2, exhaust camshaft). The exhaust camshaft position sensor signal on the second cylinder bank (Bank 2) is out of sync with the crankshaft position sensor signal. On BMW V-engines, Bank 2 is the cylinder bank opposite Bank 1 (usually the passenger side).

The code affects the VANOS system (variable valve timing) on the Bank 2 exhaust camshaft. Possible causes: a stretched timing chain, a faulty VANOS phaser, or problems with oil pressure or oil quality. Diagnosis should focus on the Bank 2 exhaust camshaft components.

Symptoms

• Engine:
• Rough idle (misfire)
• Power loss on Bank 2
• Indicators:
• Check Engine Light on
• Emissions:
• Increased harmful emissions

Diagnosis and Repair

Step 1: Check the Oil

• Check the engine oil level and condition. A low level or contaminated oil can disrupt VANOS operation.

Step 2: Inspect the Timing Chain and Timing Chain Tensioner (Bank 2)

• Check the condition of the timing chain and timing chain tensioner on Bank 2. A stretched chain is a common cause of this fault.

Step 3: Test the VANOS Solenoid Valve (Exhaust, Bank 2)

• Check the valve's resistance and operation with a multimeter or ISTA.

Step 4: Replace the VANOS Solenoid Valve (If Needed)

• If the valve is faulty, replace it with the genuine BMW part (11367579073).

Step 5: Check the Timing

• Use the factory special tools (or equivalent) to lock the camshafts and verify the timing setup.

Secondary Problems

Ignoring code P0019 can lead to:

• Timing chain failure on Bank 2 (engine rebuild)
• Exhaust valve damage from incorrect valve timing
• Catalytic converter failure from unburned fuel
• Rough running increases load on the crankshaft bearings, which can cause wear