Power supply B terminal 30 What does low voltage mean

A power supply circuit outside of a switching power supply.

"Audi A6 fault code P1602 power terminal positive 30 low voltage" means that the voltage of the power terminal 30 is too low, to adjust the voltage in time to check the relay, line, and battery voltage.

In the event of a failure of the monitored sensor or component, the fault category and description are stored in the fault memory. Faults related to the electronic throttle can also be indicated by an EPC lamp located on the combined instrument panel. If the engine control unit is unplugged or the battery is disconnected, all learning values stored in the control unit will be erased, but the contents of the fault memory will remain.

If you start the engine later, there will be short-term idle instability, so you should let the engine idle for a few minutes to complete the self-learning process. The Faults table is arranged by five-digit Faults.

If a stored fault no longer occurs after 40 warm-up phases, the fault is automatically cleared. Occasional failures (short-lived) are indicated on the screen with "sp". When repairing, it is not necessary to replace the faulty parts shown on it immediately, and the wire, plug and grounding should be checked according to the circuit diagram first, especially if the fault is with "SP", the above inspection should be carried out first.

Have you solved it, what is the reason.

Hello means that the fuse is not in good contact. [Car questions, ask the car master.] 4S shop professional technician, 10 minutes to solve. 】

Hello, can you ask you whether it is the old A6 or **, and how big is the displacement [car questions, ask the car master. 4S shop professional technician, 10 minutes to solve. 】

Hello, according to your description, your power terminal 30 voltage is too low, it is recommended to check the relay, line, and battery voltage. [Car questions, ask the car master.] 4S shop professional technician, 10 minutes to solve. 】

The voltage of the car is 12V power supply, and the output voltage is about 14V after the engine starts, and the output voltage can be increased through the on-board inverter, but because the current insurance of the cigarette lighter is limited to 15A, it is not suitable to use electrical equipment with a power of more than 100W!

Low voltage:

ULV processor, English name: Ultra Low Voltage, Chinese translation: Ultra Low Voltage Version.

After Intel adopted a new naming convention, the processor model is composed of a prefix letter and four digits, such as: core 2 duo e6600 and so on. Among them, the prefix letter in the number represents the range of TDP (Thermal Design Power Consumption) of the processor, there are currently four types such as E, T, L and U, "E" represents that the TDP of the processor will exceed 50W, mainly for desktop processors; "T" represents the TDP of the processor between 25W-49W, and most mainstream mobile processors are T series; The "L" represents the TDP of the processor between 15W-24W, which is the low-voltage version; The "U" represents the processor's TDP below 14W, which is the "ultra-low voltage version" discussed in this discussion.

To trace the development of the "ultra-low voltage version of the processor", we need to start from the Pentium era. In order to distinguish the mobile version of the Pentium with the Coppermine core, Intel renamed the new mobile version of the Pentium with the Tualatin core to "Pentium -M" in early 2002, which is also the origin of the practice of adding "M (Mobile)" to the logo of the notebook processor to indicate that it is the "mobile version".

However, two of the most anticipated versions of the ULV processor were born in 2001, namely the Mobile Pentium 500MHz and the Mobile Celeron 500MHz. With the upgrading of notebook processors, the ULV processors that can be seen at present are basically products that use core architecture processors, dual-core U2400 and U2500 and single-core U1300, U1400 and U1500, all of which are the highlights of ULV processors' major invasion of the mobile processor market.

With the latest dual-core "Core 2 Duo SU9600" and single-core "Core 2 Solo SU3500", Intel's UVL family members are already very powerful. Intel's latest plan based on the ULV platform is divided into three parts: the initial mastery single-core Celeron ULV, the performance-level single-core Core 2 Solo ULV, and the performance-level dual-core Core 2 Duo ULV.

It can be seen that since the beginning of 09 years, ULV processors will be more diversified, and at the same time, with the gradual update of products, the ** of its related products will also be more intimate and satisfying.

Hello, you are generally this is generally after the car runs out of power, it is easy to appear after taking the battery.

Are you talking about the Golf A6, if so, the fault is usually in the battery or the main power relay failure, and there is a possibility that the engine computer is broken.

Hello, check the engine computer live line, take the iron, sometimes report the fault after the power is off, look at the fault code, generally there is a problem with the line [there is a problem with the car, ask the car master. 4S shop professional technician, 10 minutes to solve. 】

Hello! This is a malfunctioning phenomenon in the engine control unit. The cause includes a problem with the relay of terminal 30 and terminal 15, and the possibility of reporting this fault code.

It is advisable to check the relay aspect first. [If you have a problem with the car, ask the car master.] 4S shop professional technician, 10 minutes to solve. 】

Hello, this fault code means that there is a problem with the main power supply relay J317, J317 supplies power to the engine computer J623 and the fan control unit J293, it is recommended that you first consult the circuit diagram to determine the location of the relay, if you suspect that it is damaged, you can switch it with the normal relay to see if the fault code of this J317 relay will be reported. . .

Check whether the fuse on the battery is blown out, the 30 terminal means that there is no live wire in the engine compartment fuse box.