
It may be a problem with the car's prompt or the P gear is not fully engaged. The following is a detailed introduction to car gears: 1. P: Parking gear. When parking the car, the gear lever must be shifted to the P position. 2. R: Reverse gear. 3. N: Neutral gear. The N position is equivalent to neutral and can be used when starting or towing the car. 4. D: Drive gear. During normal driving, place the gear lever in the D position, and the car can automatically shift between gears 1 to 3 or 4, 5. The D gear is the most commonly used gear. 5. S: Sport mode. In this gear, the transmission can shift freely, but the shifting timing is delayed, keeping the engine at high speed for a longer time, thereby increasing the vehicle's power. 7. L: Low gear. In this gear, the transmission will stay in 1st gear without shifting up, which can be used in situations such as slopes. It also has a certain braking function when going downhill. Some cars have a D2 gear, called low-speed drive gear, used for bad roads or off-road conditions. There are also buttons like a snowflake or ODOFF on the transmission.

This issue is quite common, often caused by a faulty gear position sensor. The P-gear switch in your car may not fully detect your gear selection due to a dirty or damaged position sensor. Wiring problems are also frequent culprits—loose connectors, aged or broken wires can interrupt signal transmission to the control module, making the system think you forgot to shift gears. Control module malfunctions are more troublesome; the transmission computer might have software bugs leading to false alarms. Also check if the gear lever is fully engaged—sometimes shifting too gently fails to lock into the P-position, keeping the warning light on. Quick test suggestion: restart the engine to see if the warning disappears. If not, inspect the sensor under the gear lever (refer to the manual for location) and gently clean it. If the warning persists, visit a professional shop immediately for diagnostic trouble codes to prevent potential transmission damage.

I once encountered a similar situation where this warning light came on while driving, which really startled me. The cause might be a malfunctioning P-position sensor that failed to accurately read the gear position, making the car mistakenly think it wasn't in gear. Loose wiring connections could also be the culprit, such as poor contact in the chassis wiring after prolonged vibration. I've also found cases where the gear lever itself was stuck and not fully engaged—manually jiggling it a few times resolved the issue. But safety first: if the warning light is on, it's alerting you that the vehicle might roll, especially when parked on slopes—always engage the parking brake as backup. During routine maintenance, check the sensors to prevent dust buildup that reduces sensitivity. For initial DIY checks: observe if the warning light changes when opening/closing doors, which indicates wiring issues. Bottom line: don't ignore it—address problems early to save money and drive with peace of mind.

Still flashing? Take this seriously, as there are several main causes. Sensor failure is the most common—the position sensor isn't detecting the P gear, so the system keeps prompting you to act. Circuit shorts or opens could also be the culprit, especially if moisture has corroded the wiring. Another possibility is the gear lever not being fully engaged; slight looseness can prevent contact. I recommend first ensuring the lever is pushed all the way in—listen for a clear 'click.' If that doesn’t work, check the fuses—some cars have a dedicated P-gear fuse, and a blown one can trigger false alerts. Pull over immediately to address it; don’t risk driving, as it could lead to rolling accidents. Repairs are usually affordable—replacing a sensor costs under 100 yuan.


