What it means
The transmission range control A circuit signal is above the expected level. The code does not specify whether the cause is a short, open, or other circuit fault.
At a glance
- Usually lights the check-engine light
How it works
The transmission control module monitors the signal level on transmission range control A. P07EB sets when that signal rises above the expected level; a short to battery voltage or another circuit fault may be responsible, but the code does not identify the exact wiring fault.
Common causes
Most likely first.
- Control wire shorted to battery voltage
- Connector pins corroded - high contact resistance
- Supply wire pinched against B+ source
Symptoms
- Check engine or transmission warning light on
- Harsh, delayed, or missing shifts
- Possible limp mode (locked in one gear)
- Slipping or shuddering during gear changes
How to diagnose it
- Record freeze-frame data and range-control A live data to see when the signal was high and whether it changes with selector movement.
- Inspect the range-control A harness for pinching or contact with a battery-positive supply, and check connectors for corrosion or poor pin contact.
- Following the manufacturer's procedure, measure the circuit signal and compare it with the manufacturer's specification.
- With power safely isolated as specified, check for a short to battery voltage and inspect the harness for damaged insulation or crossed wires.
- If the wiring and connectors pass, test the connected range-control component and module circuit according to the manufacturer's diagnostic procedure.
Common fixes
- Repair a pinched wire contacting a battery-positive source.
- Clean corroded connector pins and restore a sound terminal connection.
- Repair a confirmed short to voltage or damaged range-control A harness.
- Replace a faulty range-control component or repair a module circuit only after testing confirms the fault.
Can I keep driving?
Avoid driving if the transmission display disagrees with the selected range or shifting is erratic, and stop if it slips or loses drive. An overly high range-control A signal can cause incorrect range information and may limit transmission operation.
A code shows where the control module detected a fault, not always which part failed. Check the causes in order and confirm with a test before replacing parts. Have several codes? Check them together
This is a generic code: it means the same on every make. The car’s maker may add more detail in its own service information.