What it means
The gear lever position sensor B reports a circuit low fault. Selector position cannot be measured reliably.
At a glance
- Usually lights the check-engine light
- The engine or gearbox may go into limp mode
How it works
Gear lever position sensor B sends a selector-position signal to the transmission control system. P2E06 sets when the sensor B circuit voltage falls below the expected range, which may be caused by a short to ground, poor terminal contact, or a failed sensor. The low-circuit fault is specific to sensor B and differs from its high-circuit and range/performance codes.
Common causes
Most likely first.
- Position sensor failed
- Wiring or connector fault
- Connector pins corroded - high contact resistance
Symptoms
- Check-engine or transmission warning light
- Incorrect gear indication
- Difficulty selecting or engaging a gear
How to diagnose it
- Check freeze-frame and live transmission data for sensor B's signal and the selected gear, verifying that the fault coincides with a low reading.
- Inspect sensor B's connector for corrosion, moisture, pushed-back pins, or weak contact that can add resistance and lower the signal.
- Trace sensor B wiring for a short to ground, crushed insulation, or chafing along the selector and transmission harness.
- Measure sensor B's supply, ground, and signal circuit using the wiring diagram and compare results with the manufacturer's specification.
- If the circuit and connector are sound, test sensor B through lever movement and replace it only if its output stays below specification.
Common fixes
- Clean corrosion and restore firm terminal contact at sensor B's connector.
- Repair any sensor B wire shorted to ground or with damaged insulation.
- Correct a loose connection or poor ground in the sensor B circuit.
- Replace gear lever position sensor B if it continues to produce a low signal on a verified circuit.
Can I keep driving?
Avoid driving if the gear indication is wrong or the transmission does not reliably engage the selected position; this low signal can trigger restricted operation or unreliable gear recognition. Have it diagnosed promptly and do not drive when the actual gear is uncertain.
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.