Technical Description of OBD-II Trouble Code
Correlation Issue in Transmission Park Position Sensor/Switch A/B Circuit
What does that signify?
This is a generic diagnostic trouble code (DTC) related to the powertrain and is applicable to OBD-II vehicles equipped with a transmission park position switch/sensor. This includes vehicles from various manufacturers such as Dodge, Ford, Toyota, Land Rover, VW, Chevrolet, etc. Although it is a generic code, the specific repair steps may vary depending on the year, make, model, and powertrain configuration of the vehicle.
Trouble code P07BE is one of the possible codes associated with the Transmission Park Position Sensor/Switch circuit.
This code indicates that the Powertrain Control Module (PCM) has detected a correlation problem between the “A” and “B” transmission park position sensor/switch circuits. The activated code and the illumination of the check engine light or service engine soon light depend on the specific situation.
The purpose of the transmission park position sensor/switch circuit is to monitor the status of the transmission. This circuit sends a signal to the PCM when the transmission is in the park position. In many vehicles, this circuit serves as a safety feature to prevent the starter from engaging when the automatic transmission is in gear.
Consult a vehicle-specific repair manual to determine the location of the A and B circuits in your particular application.
What is the severity of this DTC?
The severity of this code varies depending on the specific malfunction, and if not addressed promptly, it may escalate to a safety issue. Immediate attention is required if the starter engages while the vehicle is in gear.
Photo of a park/neutral position switch:
What are some of the symptoms of the code?
Symptoms associated with trouble code P07BE may include:
What are some of the common causes of the code?
Possible causes for code P07BE may include:
What are some P07BE troubleshooting steps?
The first step in troubleshooting any malfunction is to refer to the Technical Service Bulletins for known issues with the specific vehicle.
Identify all components associated with the transmission park position sensor/switch circuits, including the sensor/switch itself, wiring, connectors, and the PCM in a simplex system. Conduct a thorough visual inspection of these components to check for obvious defects such as scraping, rubbing, bare wires, or burn spots. Also, inspect the connectors for corrosion buildup or damaged pins.
Advanced Steps
The advanced steps are highly specific to the vehicle and require advanced equipment for accurate execution. These procedures involve using a digital multimeter and referencing the specific technical information for the vehicle. The voltage requirements will vary based on the year, make, and model of the vehicle.
Circuit Checks
The voltage requirements for the transmission park position sensor/switch circuit and its components depend on the specific vehicle and configuration. Refer to technical data to determine the correct voltage range and follow the appropriate troubleshooting sequence. If a sensor/switch has no voltage output despite receiving the correct voltage input, it is usually an indication of internal failure.
If a power source or ground is absent, continuity testing may be necessary to assess the condition of the wiring and connectors. Continuity tests should always be performed with the power removed from the circuit, and the normal readings should be 0 ohms of resistance unless specified otherwise in the technical data. Resistance or lack of continuity indicates faulty wiring or connectors that need to be repaired or replaced.
Common Repairs
We hope that the information provided in this article has guided you in resolving the issue with your transmission park position sensor/switch circuit(s). However, always prioritize the specific technical data and service bulletins for your vehicle.
