P07BF 2017 GMC Sierra Code - Transmission Input Speed Sensor Circuit Low Voltage
Quick Answer
The P07BF diagnostic trouble code (DTC) for a 2017 GMC Sierra indicates a Transmission Input Speed Sensor Circuit Low Voltage. Common causes include Faulty transmission input speed sensor, Damaged wiring or connectors in the sensor circuit, PCM software issues. 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
- P07BF 2017 GMC Sierra indicates Transmission Input Speed Sensor Circuit Low Voltage.
- Common causes
- Common causes include Faulty transmission input speed sensor, Damaged wiring or connectors in the sensor circuit, PCM software issues.
- 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.
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Code P07BF 2017 GMC Sierra Description
The P07BF diagnostic trouble code (DTC) for a 2017 GMC Sierra indicates a Transmission Input Speed Sensor Circuit Low Voltage. This code is triggered when the powertrain control module (PCM) detects that the voltage signal from the transmission input speed sensor is lower than the specified range. The transmission input speed sensor is responsible for monitoring the speed of the input shaft into the transmission. This information is crucial for the PCM to determine the proper shift points and ensure smooth operation of the transmission.
Common Causes of P07BF 2017 GMC Sierra
- Faulty transmission input speed sensor
- Damaged wiring or connectors in the sensor circuit
- PCM software issues
- Electrical problems in the transmission control module
- Mechanical issues in the transmission
Symptoms of P07BF 2017 GMC Sierra
- Erratic shifting behavior
- Harsh or delayed gear shifts
- Transmission slipping
- Poor acceleration
- Reduced fuel efficiency
How to Fix P07BF 2017 GMC Sierra
- Begin by diagnosing the issue using a scan tool to retrieve the specific trouble code and perform a thorough inspection of the transmission input speed sensor and its circuit.
- Inspect the wiring and connectors for any damage or corrosion, repairing or replacing as necessary.
- Test the transmission input speed sensor using a multimeter to ensure it is functioning correctly. Replace the sensor if it is faulty.
- Clear the DTC from the PCM's memory and test drive the vehicle to verify that the issue has been resolved.
- If the problem persists, further diagnostic tests may be required to identify any underlying issues with the transmission or PCM.
Cost to Fix P07BF 2017 GMC Sierra
The typical repair costs for addressing a Transmission Input Speed Sensor Circuit Low Voltage code can vary depending on the specific cause of the issue. In general, the cost of replacing a transmission input speed sensor can range from $100 to $300, including parts and labor. However, if the problem is related to wiring or PCM issues, the repair costs may be higher. It is advisable to consult with a professional mechanic to get an accurate estimate based on the specific diagnosis and repair needed. Keep in mind that labor rates at auto repair shops can vary, so it's recommended to inquire about rates in your local area for a more precise cost estimate.
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