Transmission Range Control A Position Sensor/Switch Circuit/Open

Where it lives

For P27EB, the circuit described runs through the sensor. The description of P27EB reports the sensor as open.

Check these first

• An open in the transmission range control A position sensor signal circuit
• A short to ground or voltage on the transmission range control A position sensor signal wire
• A failed transmission range control A position sensor
• A corroded or backed out pin at the transmission range control A position sensor connector

What to do next

1. Read transmission range control A position sensor state on a scan tool
2. Move the selector through each range and watch the readout
3. Test the transmission range control A position sensor signal circuit for open and short faults
4. Check the transmission range control A position sensor connector pins
5. Replace transmission range control A position sensor if the readout does not follow the selector
6. Clear the code and retest

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