Damaged, corroded or loose wiring or connector at the park position sensor/switch or range sensor; Faulty or worn park position sensor/switch or transmission range sensor (internal contact wear or failure); Selector cable, linkage or lever out of adjustment, so the sensor is not aligned with the selected position; Water, fluid or debris contamination inside the sensor or its connector; Low or out-of-range supply voltage or a poor earth to the sensor or control unit; Fault inside the transmission control unit or mechatronic unit; Outdated control unit software where the manufacturer has issued a correction for this fault.

P07BE

Transmission Park Position Sensor/Switch A/B Correlation.

Generic
Powertrain
Generic code
Medium severity

How this code is built

P: SystemPowertrain
0: Defined bySAE, the same on every car
7: AreaTransmission
BE: FaultThe specific fault in that area

What it means

P07BE means the transmission control unit has compared the two signals from the park position sensor or switch (circuits A and B) and found that they do not agree with each other. The control unit expects the two signals to match in a set pattern for each park, reverse, neutral and drive position, and it set the code when they disagreed for longer than the allowed time. The exact layout of the sensor and how the check works depend on the vehicle and transmission.

Symptoms

Gearbox warning light or malfunction message on the dashboard
Engine will not start, or starts only in neutral, because the control unit cannot confirm park
Selector position shown incorrectly on the display
Reverse lights or park lock not working correctly
Gearbox stuck in one gear, or in a limp-home mode
Shift lever feels loose or does not line up with the displayed gear

Possible causes

Damaged, corroded or loose wiring or connector at the park position sensor/switch or range sensorlikely
Faulty or worn park position sensor/switch or transmission range sensor (internal contact wear or failure)likely
Selector cable, linkage or lever out of adjustment, so the sensor is not aligned with the selected positionlikely
Water, fluid or debris contamination inside the sensor or its connectorpossible
Low or out-of-range supply voltage or a poor earth to the sensor or control unitpossible
Fault inside the transmission control unit or mechatronic unitrare
Outdated control unit software where the manufacturer has issued a correction for this faultrare

How to diagnose

Read all stored and pending codes and the freeze frame data, noting selector position, vehicle speed and battery voltage when the code set
Check the battery condition and charging voltage, as low voltage can cause false correlation faults
Visually inspect the sensor wiring and connector for chafing, corrosion, fluid ingress and loose pins
Check the selector cable or linkage for correct adjustment and free movement, following the procedure for the specific model
Using live data, move the selector through each position and compare the A and B signals with the expected pattern for that vehicle
Measure the supply, earth and signal circuits at the sensor connector against the manufacturer's specification, and check for shorts or open circuits
Check for related transmission or network communication codes that point to a control unit fault
Check for any manufacturer software updates or technical bulletins relating to this code on the specific model

How to fix

Repair or replace damaged wiring and clean or replace corroded connectors
Replace the park position sensor/switch or range sensor and carry out any required adaptation or setup
Adjust or replace the selector cable or linkage so the sensor reads the correct position
Fix any charging, battery or earth problems found
Update the control unit software only if a known fault with the existing calibration is confirmed
Repair or replace the transmission control unit or mechatronic unit if testing proves it faulty

Can I keep driving?

Medium severity

The car may still be driveable, but it could fail to start or go into limp mode without warning, so get it checked soon. Avoid driving if the gear display is wrong or the car will not hold in park.

Guide written by AI from the code's definition. Confirm with a diagnosis before replacing parts.