P07BC Transmission Park Position Sensor Switch B Circuit Performance High

Definition: The OBD2 code P07BC indicates a problem with the transmission park position sensor switch B circuit, specifically that its performance is higher than expected. This means that the sensor or its circuit may be malfunctioning, causing incorrect readings or signals related to the vehicle’s park position.

p07bc – Transmission Park Position Sensor Switch B Circuit Performance High

Typical Severity: Moderate

Common Causes

P07BC – Transmission Park Position Sensor Switch B Circuit Performance High

Common Causes:

• Faulty park position sensor switch B
• Wiring or connector issues in the circuit
• Corrosion in the sensor connections
• Short circuit in the wiring
• Software glitches in the transmission control module (TCM)

 

Common Misdiagnosis

OBD2 Code: P07BC

Description: Transmission Park Position Sensor/Switch ‘B’ Circuit Performance High

Common Misdiagnosis: Replacing the transmission park position sensor/switch without checking for wiring issues or connector problems.

 

Common Diagnostic Steps

OBD2 Code: P07BC

Description: Transmission Park Position Sensor/Switch ‘B’ Circuit Performance High

• Verify the code with an OBD-II scanner and clear it to see if it returns.
• Inspect the transmission park position sensor/switch for any visible damage or corrosion.
• Check the wiring and connectors associated with the park position sensor/switch for signs of wear, damage, or disconnection.
• Test the voltage and ground signals at the sensor using a multimeter to ensure they are within specifications.
• If equipped, use a scan tool to monitor live data from the transmission control module (TCM) to check for abnormal readings from the park position sensor/switch.
• Consult vehicle-specific repair manuals or databases for detailed testing procedures and specifications related to this code.
• If all electrical checks pass, consider replacing the transmission park position sensor/switch as it may be faulty.
• If issues persist after replacement, further diagnosis of the TCM or related circuitry may be necessary. Consider consulting a professional technician for advanced diagnostics.