Transmission Park Position Sensor Circuit Intermittent
The P07B7 code indicates an intermittent or erratic signal from the transmission park position sensor/switch. This sensor tells the PCM when the transmission is in Park, enabling key removal and starting. An intermittent fault may cause the vehicle to not recognize Park, leading to starting issues or false gear indications.
01. Most Common Causes
- Faulty park/neutral position switch
- Wiring or connector issues (corrosion, loose connections)
- Damaged transmission range sensor
02. Symptoms You Will Notice
- Engine may not start or start intermittently
- Key cannot be removed from ignition
- Check Engine Light on
- Transmission may not shift properly
03. Step-by-Step Diagnosis
Step 1: Scan for codes and record freeze frame data.
Step 2: Inspect the park/neutral position switch and wiring for damage or corrosion.
Step 3: Test switch continuity and voltage with a multimeter.
Step 4: Check for TSBs related to the specific vehicle model.
04. Commonly Affected Makes
05. Frequently Asked Questions
Is it safe to drive with this code?▼
It is not recommended as the vehicle may not start or could shift unexpectedly, posing a safety risk.
How much does it cost to fix?▼
Typically $50-$150 for diagnosis and switch replacement, but costs vary by vehicle.