Does the Dongfeng Nissan P0846 fault need to be repaired?

[DeAriana]

Dongfeng Nissan P0846 fault needs to be repaired. The P0846 fault is a transmission pressure sensor fault, and the transmission valve body needs to be replaced. The symptoms of a damaged transmission valve body are: 1. After the transmission fails, the computer can detect it, the fault light will turn on to alert, and it will enter the lock gear state, which is the protection mode; 2. The transmission oil temperature is too high, causing the transmission to jerk. Taking the Tiida 2021 1.6L Manual Ledong Edition as an example: The manufacturer of this car is Dongfeng Nissan, the level is a compact car, the intake form is naturally aspirated, the maximum horsepower is 122ps, the maximum torque is 155nm, the transmission is a 5-speed manual, and the body type is a 5-door, 5-seat hatchback.

[JosiahDella]

I've been driving a Dongfeng Nissan for several years and have quite some experience with the P0846 fault code. It's a warning code from the transmission control system, mainly caused by issues with the oil pressure sensor or its circuit. If left unrepaired, it may lead to jerky gear shifts, sluggish acceleration, or even dangerous sudden gear jams on highways. I remember a friend's car had this warning light ignored last time, resulting in transmission overheating damage and eventually costing over 5,000 yuan to repair the valve body unit. Safety comes first, especially when traveling with family. Don't take the risk. I recommend going to a 4S shop for inspection as soon as possible. If it's a minor issue like a loose sensor or aged wiring, the repair could cost just a few hundred yuan. Delaying will only increase risks and repair costs.

[LeSabrina]

As a mechanic with twenty years of experience in auto repair, I've dealt with numerous P0846 fault codes in Nissan vehicles. This code commonly appears in CVT transmissions, indicating an abnormal signal from the oil pressure switch or sensor. If left unrepaired, the transmission control module receiving incorrect data can lead to inaccurate gear shifting, increased fuel consumption, and in severe cases, damage to internal gears and chains requiring major repairs. Last time, a customer delayed addressing it, resulting in a locked-up transmission that left them stranded on the road. I recommend immediately using diagnostic equipment to read the code and identify the issue - prompt attention can save significant costs. Remember not to disassemble parts randomly; having it professionally repaired at a specialized shop for just a few hundred can prevent much larger expenses later.

[SanBrayden]

When I was younger and driving a Nissan, I encountered the P0846 fault code and tried to save money by ignoring it. However, I soon noticed acceleration hesitation and increased fuel consumption. After delaying repairs for three months, the transmission completely failed, and the repair cost jumped from the initial estimate of 300 to over 2,000. This is a typical sensor issue that must be fixed, as it affects overall performance. I recommend purchasing a simple OBD scanner to check the code yourself first. If there’s an issue, take it to a professional shop—the cost won’t be high. Early repairs are the real way to save money.