P156F Chevrolet Code - High Voltage Allowed Signal Message Counter Incorrect
Quick Answer
The Generator Control Module also called the Starter/Generator Control Module is comprised of the following three control modules: the Hybrid/EV Powertrain Control Module 1, 14 V power module, and the drive motor control module. Common causes include Faulty Hybrid/EV Powertrain Control Module 2, Hybrid/EV Powertrain Control Module 2 harness is open or shorted, Hybrid/EV Powertrain Control Module 2 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
- P156F Chevrolet indicates High Voltage Allowed Signal Message Counter Incorrect.
- Common causes
- Common causes include Faulty Hybrid/EV Powertrain Control Module 2, Hybrid/EV Powertrain Control Module 2 harness is open or shorted, Hybrid/EV Powertrain Control Module 2 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 P156F Chevrolet Description
The Hybrid/EV Powertrain Control Module 2 is constantly sending the Hybrid/EV Powertrain Control Module 1 serial data messages containing high voltage allowed data. These serial data messages are sent through circuits which are part of a communication network called the Controller Area Network (CAN). The Hybrid/EV Powertrain Control Module 1 sets DTC P156F when it detects a discrepancy in the structure of this message causing its integrity to be questioned.
An intermittent fault in the Controller Area Network circuits will cause DTC P156F to set.
What are the Possible Causes of the DTC P156F Chevrolet?
- Faulty Hybrid/EV Powertrain Control Module 2
- Hybrid/EV Powertrain Control Module 2 harness is open or shorted
- Hybrid/EV Powertrain Control Module 2 circuit poor electrical connection
- Faulty Starter/Generator Control Module
How to Fix the DTC P156F Chevrolet?
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 P156F Chevrolet 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 P156F Chevrolet Code
1. What are common symptoms of OBDII code P156F in a Chevrolet vehicle?
- Common symptoms include check engine light illumination, reduced engine power, and potential drivability issues.
2. What does the OBDII code P156F Chevrolet indicate?
- The code P156F indicates that the High Voltage Allowed Signal Message Counter is incorrect in the vehicle's control module.
3. What are the possible causes of OBDII code P156F in a Chevrolet?
- Possible causes include a faulty high voltage battery, issues with the high voltage battery management system, wiring problems, or a malfunctioning control module.
4. How can I diagnose the OBDII code P156F in my Chevrolet?
- Diagnosing the code may involve using a scan tool to read the code, checking the high voltage battery system for any faults, and inspecting the wiring for any damage.
5. Can I still drive my Chevrolet with the OBDII code P156F present?
- It is not recommended to drive the vehicle with the code P156F present, as it can lead to reduced engine power and potential drivability issues.
6. How can I reset the OBDII code P156F in my Chevrolet?
- Resetting the code may involve using a scan tool to clear the code after addressing the underlying issue that triggered it.
7. Is it safe to ignore the OBDII code P156F in my Chevrolet?
- Ignoring the code can lead to further issues with the vehicle's high voltage system and may result in more severe problems down the line.
8. Can I repair the OBDII code P156F in my Chevrolet myself?
- While some basic checks and repairs may be possible for DIY enthusiasts, it is recommended to have a professional mechanic diagnose and repair the issue to ensure it is properly resolved.
9. How much does it cost to fix the OBDII code P156F in a Chevrolet?
- The cost of fixing the code can vary depending on the underlying cause, parts needed for repair, and labor costs involved. It is best to consult a mechanic for an accurate estimate.
10. Are there any recalls or service bulletins related to OBDII code P156F in Chevrolet vehicles?
- It is advisable to check with Chevrolet dealerships or online resources for any relevant recalls or service bulletins related to the OBDII code P156F to see if there are any known issues or solutions provided by the manufacturer.
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