Gear Shift Position Control Error
The P0919 code indicates a malfunction in the gear shift position control system, which includes the transmission range sensor (TRS) or manual shift lever position sensor. This sensor tells the powertrain control module (PCM) which gear is selected. When the PCM detects an invalid or inconsistent signal from the sensor, it sets this code. This can lead to incorrect gear selection, harsh shifting, or no start condition.
01. Most Common Causes
- Faulty transmission range sensor (TRS)
- Wiring or connector issues in the sensor circuit
- Corrosion or damage to the sensor
- Misadjusted or damaged shift linkage
- PCM software or hardware failure (rare)
02. Symptoms You Will Notice
- Check Engine Light illuminated
- Transmission stuck in one gear or fails to shift
- Vehicle may not start or shift out of Park
- Erratic or harsh shifting
- Reduced fuel economy
03. Step-by-Step Diagnosis
Step 1: Use an OBD2 scanner to confirm the code and check for other related codes.
Step 2: Inspect the transmission range sensor and its wiring for damage, corrosion, or loose connections.
Step 3: Test the sensor's resistance and voltage output per manufacturer specifications.
Step 4: Check shift linkage adjustment and ensure proper mechanical operation.
Step 5: If necessary, replace the transmission range sensor and clear the code.
04. Commonly Affected Makes
05. Frequently Asked Questions
Is it safe to drive with this code?▼
It is not recommended. The vehicle may shift unexpectedly or fail to start, posing a safety risk. Have it diagnosed promptly.
How much does it cost to fix?▼
Typically between $50 and $150 for parts and labor, depending on the vehicle and shop rates.