P0046 2018 Chevrolet Silverado Code - Turbocharger Boost Control Position Performance
Quick Answer
A smart turbocharger vane position actuator incorporates a brushless motor and is mounted on top of the turbocharger. Common causes include Faulty Turbocharger Vane Position Actuator, Turbocharger Vane Position Actuator harness is open or shorted, Turbocharger Vane Position Actuator circuit poor electrical connection. 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
- P0046 2018 Chevrolet Silverado indicates Turbocharger Boost Control Position Performance.
- Common causes
- Common causes include Faulty Turbocharger Vane Position Actuator, Turbocharger Vane Position Actuator harness is open or shorted, Turbocharger Vane Position Actuator circuit poor electrical connection.
- 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 P0046 2018 Chevrolet Silverado Description
What are the Possible Causes of the DTC P0046 2018 Chevrolet Silverado?
- Faulty Turbocharger Vane Position Actuator
- Turbocharger Vane Position Actuator harness is open or shorted
- Turbocharger Vane Position Actuator circuit poor electrical connection
- Faulty Turbocharger Assembly
How to Fix the DTC P0046 2018 Chevrolet Silverado?
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.
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P0046 2018 Chevrolet Silverado 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.
Need more information about the P0046 2018 Chevrolet Silverado code?
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Frequently Asked Questions about P0046 2018 Chevrolet Silverado Code
1. What does the OBDII code P0046 on a 2018 Chevrolet Silverado indicate?
- The code P0046 indicates a Turbocharger Boost Control Position Performance issue in the vehicle.
2. What are some common symptoms of OBDII code P0046 in a 2018 Chevrolet Silverado?
- Common symptoms include reduced engine power, poor acceleration, and possible turbocharger issues.
3. What are the possible causes of OBDII code P0046 in a 2018 Chevrolet Silverado?
- The code P0046 can be triggered by a faulty turbocharger wastegate, damaged wiring or connectors, or a malfunctioning boost control position sensor.
4. How can I diagnose the cause of OBDII code P0046 in my 2018 Chevrolet Silverado?
- Diagnosing the issue may involve checking the wastegate operation, inspecting the wiring and connectors for damage, and testing the boost control position sensor.
5. Can I continue driving my 2018 Chevrolet Silverado with the OBDII code P0046 present?
- It is not recommended to drive the vehicle with the code P0046 as it can lead to further damage and potential safety hazards.
6. What are the repair options for addressing OBDII code P0046 in a 2018 Chevrolet Silverado?
- Repairs may involve replacing the turbocharger wastegate, repairing or replacing damaged wiring, or replacing the boost control position sensor.
7. How much does it typically cost to fix OBDII code P0046 in a 2018 Chevrolet Silverado?
- The cost of repairs for the P0046 code can vary depending on the specific cause of the issue, but it may range from a few hundred to over a thousand dollars.
8. Can I reset the OBDII code P0046 in my 2018 Chevrolet Silverado using an OBDII scanner?
- Yes, you can reset the code using an OBDII scanner, but it is important to address the underlying issue causing the code to prevent it from reoccurring.
9. Are there any maintenance tips to prevent OBDII code P0046 from appearing in a 2018 Chevrolet Silverado?
- Regularly servicing and maintaining the turbocharger system, checking for any signs of wear or damage, and addressing any issues promptly can help prevent the P0046 code.
10. Is it recommended to seek professional help for diagnosing and repairing OBDII code P0046 in a 2018 Chevrolet Silverado?
- Due to the complexity of turbocharger systems and potential safety risks, it is advisable to consult a qualified mechanic or dealership for accurate diagnosis and repairs of the P0046 code.
Discuss the causes and fixes for P0046 2018 Chevrolet Silverado OBDII Code
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My brother in law has been fighting this P0046. he took to a dealer that said his battery (8 mos old) was bad and corrosion on a $400 cable assy. (We cleaned the terminals, it comes back again) It comes back intermittently and goes into fail safe, won't accelerate over 30-40mph(a hazard on the freeway!) Dealer doesnt seem to know how to fix it.
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P0046 on the 2018 Silverado points to the turbo vane position control system, and the fact that it is intermittent and puts the truck into fail-safe makes me think more about the actuator, its wiring, or the connector than the battery itself.
A weak battery or corroded cable can cause strange electrical faults, but if cleaning the terminals doesn’t change the problem and P0046 keeps returning, I would want the dealer to watch commanded versus actual turbo vane position on a scan tool while the fault occurs. If the actuator is being commanded to move but the position doesn’t follow, the actuator or turbo vane mechanism is sticking. If the signal drops out intermittently, then inspect the actuator harness and connector closely for heat damage, rubbed wires, or poor terminal tension.
Since the truck is dropping into reduced power on the highway, I would not keep treating this as just a battery issue. The turbo vane actuator circuit needs to be properly diagnosed under the conditions when the fault happens.
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