P16F4 GMC Code - Control Module Transmission Range Switch Input Circuitry Performance
Quick Answer
The automatic transmission manual shift shaft position switch assembly, also called the internal mode switch assembly, contains two sliding hall-effect switch assemblies attached to the control valve body within the transmission. Common causes include Faulty Control Module Transmission Range Switch, Control Module Transmission Range Switch harness is open or shorted, Control Module Transmission Range Switch 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
- P16F4 GMC indicates Control Module Transmission Range Switch Input Circuitry Performance.
- Common causes
- Common causes include Faulty Control Module Transmission Range Switch, Control Module Transmission Range Switch harness is open or shorted, Control Module Transmission Range Switch 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 P16F4 GMC Description
The hybrid powertrain control module is internal to the power inverter module, often referred to as the drive motor generator power inverter module and is not serviced separately. The hybrid powertrain control module compares the internal mode switch requested direction to other data to verify that the indicated direction and range switch calculation is correct.
What are the Possible Causes of the DTC P16F4 GMC?
- Faulty Control Module Transmission Range Switch
- Control Module Transmission Range Switch harness is open or shorted
- Control Module Transmission Range Switch circuit poor electrical connection
How to Fix the DTC P16F4 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.
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P16F4 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 P16F4 GMC Code
1. What are common symptoms of OBDII code P16F4 GMC?
- Common symptoms include erratic shifting, transmission slipping, and the inability to shift gears properly.
2. What are the possible causes of OBDII code P16F4 GMC?
- The code can be triggered by issues with the transmission range switch, faulty wiring, or a malfunctioning control module.
3. How can I diagnose the OBDII code P16F4 GMC?
- Diagnosis involves using a scan tool to read the code, checking the transmission range switch for proper operation, and inspecting the wiring for any damage.
4. Can I still drive my vehicle with OBDII code P16F4 GMC present?
- It is not recommended to drive the vehicle with this code present, as it can lead to further damage to the transmission.
5. How do I repair OBDII code P16F4 GMC?
- Repair options include replacing the transmission range switch, repairing any damaged wiring, or reprogramming the control module.
6. Will resetting the trouble codes make OBDII code P16F4 GMC disappear?
- Resetting the trouble codes may temporarily clear the code, but it will likely reappear if the underlying issue is not addressed.
7. Can a DIY enthusiast fix OBDII code P16F4 GMC?
- While some aspects of the repair may be DIY-friendly, it is recommended to consult a professional mechanic for proper diagnosis and repair of this code.
8. How important is it to address OBDII code P16F4 GMC promptly?
- It is crucial to address this code promptly to prevent further damage to the transmission and ensure the vehicle operates safely.
9. Is OBDII code P16F4 GMC a serious issue?
- Yes, OBDII code P16F4 GMC is a serious issue that can impact the performance and safety of the vehicle if left unresolved.
10. How long does it typically take to repair OBDII code P16F4 GMC?
- The repair time can vary depending on the exact cause of the code, but it may take a few hours to a full day to diagnose and fix the issue.
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