P07BB OBD Error Code: Problem & Solutions

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Is the car engine not performing at par with the expectations? Do you notice affected performance, vehicle not starting and stalling, delayed throttle response and Check Engine Light illuminated on the dashboard? This can be an indication of the problem the transmission park position sensor/switch, resulting in OBD code P07BB getting stored in the Powertrain Control Module (PCM).

OBD-II Code Transmission may not shift out of park is defined as a Transmission Park Position Sensor/Switch "B" Circuit.

This code is an indication that the Powertrain Control Module (PCM) has detected a malfunction that is affecting the operation of the transmission park position sensor/switch "B" circuit. The specific situation determines the code activated by the PCM and the check engine light or the service engine soon light will be illuminated. The purpose of the transmission park position sensor/switch "B" circuit is to monitor the status of the transmission. This circuit sends a signal to the PCM when the transmission is placed into the park position. Based on the specific vehicle, this circuit is commonly a safety feature to prevent the starter from engaging with the automatic transmission in gear.

What causes this problem with the Transmission Park Position Sensor/Switch “B” Circuit Performance/Low?

• Faulty park position sensor
• Transmission Control Module sensor failure
• Damaged wiring and harness
• Defective PCM

1. Transmission Park Position Sensor - Faulty sensor will transmit and read the information wrongly and thus needs immediate replacement. Buy new sensor and replace now!
2. Transmission Park Position Switch - Check for damaged switches and replace if not working properly. Buy new park position switch now!
3. Transmission Park Position Sensor/Switch Harness - Damaged wiring and harness will make it difficult for the vehicle modules to perform to its potential and thus must be replaced.
4. Transmission Park Position Sensor Connector - Faulty connectors must be checked and replaced for and thus be careful of this too.
5. Powertrain Control Module - PCM can store and flash wrong OBD error if it is itself faulty. Replace the faulty PCM components immediately.
6. Diagnostic Tools - Use professional level tools to detect and correct the OBD code problems. Buy now!

You might be thinking that how would you diagnose these problems? We at Parts Avatar Canada would help you diagnose the major symptoms easily.

Common Symptoms

• Illumination of Check Engine Light
• Vehicle stalling and hesitant
• Starter capture with the vehicle in gear
• Transmission may not transfer out of park
• Transmission not moving into park

Have a look at some ways with which you can correct the P07BB code:

• Transmission Park Position Sensor/Switch Replacement
• Transmission Park Position Sensor/Switch Harness Replacement
• Transmission Park Position Sensor Connector Replacement
• Powertrain Control Module Replacement

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Here are some steps which you should follow in order to diagnose this P07BB fault code:

• Look for components associated with the transmission park position sensor/switch "B" circuit which includes the transmission park position sensor/switch, wiring, connectors and the PCM on a simplex system.
• Conduct a visual inspection to check all of the associated wiring and connectors for obvious defects such as scraping, rubbing, bare wires or burn spots. The connectors should also be checked for corrosion build up or damaged pins.
• One will require OBD scanner tools and a digital multimeter and the specific technical references for the vehicle to solve this obd code error. Voltage requirements may vary based of the specific year, make and model of the vehicle.
• Refer the technical data to obtain the correct voltage range for the transmission park position sensor/switch and the appropriate troubleshooting sequence to follow. The correct voltage input to a sensor/switch with no voltage output is normally an indication of internal failure.
• There can be a time of absence of a power source or ground, a continuity test may be needed to check the condition of the wiring and connectors. Perform a continuity tests with the power removed from the circuit and the normal readings should be 0 ohms of resistance unless otherwise specified by the technical data.
• If there’s no resistance or no continuity, it is an indication of faulty wiring or connectors that are shorted or open and must be repaired or replaced.

Common Mistakes When Diagnosing The P07BB Code

It is important to understand that there can be many other factors causing this problem rather than directly blaming the pressure sensor completely. Always check for faulty wirings, and fuses as well as circuits and sensors for error too. Take help of professional mechanic to solve OBD code problem as this will ensure avoidance of misdiagnosis and can also help to reduce the costs associated with the repairs.