Gear Shift Position Circuit Low
The P0916 code indicates that the powertrain control module (PCM) has detected a low voltage condition in the gear shift position circuit. This circuit is responsible for communicating the selected gear (Park, Reverse, Neutral, Drive) to the PCM. A low voltage reading suggests a short to ground, a faulty sensor, or a wiring issue, which can prevent the vehicle from starting or shifting properly.
1. Symptoms You Will Notice
- Engine may not start or start in wrong gear
- Transmission stuck in one gear or fails to shift
- Check Engine Light illuminated
- No crank or no start condition
2. Most Common Causes
- Faulty gear shift position sensor
- Short to ground in the gear shift position circuit wiring
- Corroded or damaged connector at the sensor
- Failed PCM (rare)
3. Step-by-Step Diagnosis
Step 1: Use a scan tool to confirm P0916 and check for other related codes.
Step 2: Visually inspect the gear shift position sensor and its wiring for damage, corrosion, or loose connections.
Step 3: Test the sensor's voltage and ground signals using a multimeter; compare to manufacturer specifications.
Step 4: If sensor tests bad, replace it. If wiring issue, repair or replace affected wires.
4. Frequently Asked Questions
Is it safe to drive with this code?▼
No, it is not safe. The vehicle may not start or may shift unexpectedly, leading to a potential accident. Have it diagnosed and repaired immediately.
How much does it cost to fix?▼
The cost typically ranges from $50 to $150 for diagnosis and repair, depending on whether the sensor or wiring needs replacement.
5. Commonly Affected Makes
This is a generic OBD2 code, potentially applicable to any manufacturer using this diagnostic standard.