P07B9
Transmission Park Position Sensor/Switch B Circuit Low
P07B9 is an OBD-II diagnostic trouble code meaning: Transmission Park Position Sensor/Switch B Circuit Low. Common causes: open or short circuit in the sensor circuit, parking position sensor malfunction. Estimated repair cost: $17–67.
Symptoms
- Check Engine light comes on
- Problems starting the engine (the car 'thinks' it is not in park)
- Incorrect display of gear selector position
- The car may roll on level ground when 'parked'
- Activating transmission emergency mode
Causes
- Open or short circuit in the sensor circuit
- Parking position sensor malfunction
- Connector problems or contact corrosion
- Transmission control module (TCM) malfunction
- Wiring harness damage
How to Fix
- Check the integrity of the sensor circuit (resistance, voltage)
- Inspect connectors and contacts for corrosion or damage
- Check the functionality of the parking position sensor
- If necessary, replace the sensor or repair the circuit
- Scan the TCM for additional trouble codes
Related codes
Error P07B9 by Vehicle Brand
FAQ
What does the P07B9 code mean?
P07B9 is an OBD-II diagnostic trouble code that indicates: Transmission Park Position Sensor/Switch B Circuit Low
What causes a P07B9 error code?
The most common causes of P07B9 include: Open or short circuit in the sensor circuit; Parking position sensor malfunction; Connector problems or contact corrosion; Transmission control module (TCM) malfunction.
How do I fix a P07B9 diagnostic trouble code?
To fix P07B9: Check the integrity of the sensor circuit (resistance, voltage). Inspect connectors and contacts for corrosion or damage. Check the functionality of the parking position sensor. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P07B9?
Limited driving only, diagnose soon
How much does it cost to fix P07B9?
The estimated repair cost for P07B9 is $17–67. Actual cost depends on your vehicle, location, and labor rates.
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