P0019 GMC Code - Crankshaft Position - Camshaft Position Correlation Bank 2 Sensor 'B'
Quick Answer
The Crankshaft Position (CKP) sensor is a permanent magnet generator, known as a variable reluctance sensor. Common causes include Mechanical timing fault, Blocked oil passage, Low oil level. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
- What it means
- P0019 GMC indicates Crankshaft Position - Camshaft Position Correlation Bank 2 Sensor 'B'.
- Common causes
- Common causes include Mechanical timing fault, Blocked oil passage, Low oil level.
- Severity
- High - diagnose this code as soon as possible.
- Can I drive?
- Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
Code P0019 GMC Description
The Camshaft Position (CMP) sensor is triggered by a notched reluctor wheel built into the exhaust camshaft sprocket. The CMP sensor provides 6 signal pulses every camshaft revolution. Each notch, or feature of the reluctor wheel is of a different size for individual cylinder identification. This means the CMP and crankshaft position (CKP) signals are pulse width encoded to enable the PCM to constantly monitor their relationship. This relationship is used to determine camshaft actuator position and control its phasing at the correct value. The PCM also uses this signal to identify the compression stroke of each cylinder, and for sequential fuel injection. The CMP sensor is connected to the PCM by a 12-volt, low reference, and signal circuit.
What are the Possible Causes of the DTC P0019 GMC?
- Mechanical timing fault
- Blocked oil passage
- Low oil level
- Faulty Exhaust ('B') Camshaft Position (CMP) Sensor
- Faulty Crankshaft Position (CKP) Sensor
How to Fix the DTC P0019 GMC?
Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.
Code Tech Notes
2007-2012 GMC Acadia
2010-2012 GMC Terrain
GMC Factory Service Bulletin OBDII Code P0019
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P0019 GMC code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.
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Frequently Asked Questions about P0019 GMC Code
What does the OBDII code P0019 mean for a GMC vehicle?
P0019 indicates an issue with the correlation between the crankshaft position and camshaft position on Bank 2 Sensor 'B', meaning the engine timing may be off or a related sensor is malfunctioning.
What are the common symptoms of a P0019 code on a GMC?
Symptoms may include rough idling, engine stalling, reduced fuel efficiency, difficulty starting the engine, and the Check Engine Light illuminating.
What causes the P0019 code on a GMC?
Common causes include a faulty camshaft or crankshaft position sensor, a stretched or damaged timing chain, worn timing components, or issues with the engine control module (ECM).
Can I still drive my GMC with a P0019 code?
While it may be possible to drive, it’s not recommended, as continuing to operate the vehicle could cause further engine damage or lead to unsafe driving conditions.
How do you diagnose a P0019 trouble code on a GMC?
Diagnosis typically involves using an OBDII scanner to verify the code, inspecting the timing chain and components, checking the crankshaft and camshaft position sensors, and verifying proper wiring and connections.
What repairs are typically needed to fix a P0019 code on a GMC?
Repairs may involve replacing the camshaft or crankshaft position sensor, repairing or replacing the timing chain and related components, or addressing wiring and connector issues.
How much does it cost to fix a P0019 code on a GMC?
The cost can vary widely, from $100-$300 for sensor replacements to over $1,000 if timing chain or engine component repairs are required.
Can a bad oil condition cause the P0019 code on a GMC?
Yes, dirty or low engine oil can affect the performance of the timing components, leading to misalignment and triggering the P0019 code.
Is a P0019 code specific to GMC vehicles?
No, the P0019 code is a generic OBDII code that can appear on various vehicle makes, but the diagnostic and repair steps may vary depending on the manufacturer.
How can I prevent the P0019 code from appearing on my GMC?
Regular maintenance, such as timely oil changes, using the correct oil type, and inspecting timing components during service, can help prevent this code.
Discuss the causes and fixes for P0019 GMC OBDII Code
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