Transmission Park Position Sensor Circuit Performance High
The P07BC code indicates that the transmission park position sensor circuit is reading a higher than expected voltage or resistance. This sensor tells the powertrain control module (PCM) when the transmission is in park. A high circuit performance issue can be caused by a faulty sensor, wiring problems, or a short to voltage. This can prevent the engine from starting or cause incorrect gear indication.
1. Symptoms You Will Notice
- Engine may not start in park
- Incorrect gear indicator on dashboard
- Transmission stuck in park or fails to shift
- Check Engine Light illuminated
2. Most Common Causes
- Faulty park position sensor
- Short to voltage in sensor circuit
- Damaged wiring or connector
- Corrosion in electrical connections
3. Step-by-Step Diagnosis
Step 1: Scan for additional codes and record freeze frame data.
Step 2: Visually inspect the park position sensor and wiring for damage or corrosion.
Step 3: Test sensor voltage and resistance with a multimeter; compare to manufacturer specs.
Step 4: Check for shorts to power or ground in the circuit.
Step 5: Replace sensor if faulty; repair wiring as needed.
4. Frequently Asked Questions
Is it safe to drive with this code?▼
No, it is not safe. The vehicle may not start or could shift unexpectedly, posing a safety risk.
How much does it cost to fix?▼
Typically $50-$150 for parts and labor, depending on the vehicle and shop rates.
5. Commonly Affected Makes
This is a generic OBD2 code, potentially applicable to any manufacturer using this diagnostic standard.