P0700 — Transmission Control System Malfunction. Got a P0700 code in Wayne, NJ? Bring it to RS Auto Werks. We find the real cause of a transmission fault code before replacing anything, quote in writing, and only do the work you approve. Any make or model, including BMW, Mercedes, Audi and VW with factory-level tools.
What P0700 means
P0700 is a 'flag' code. The transmission computer has found a problem and asked the engine computer to turn on the check engine light. P0700 itself does not say what is wrong; the real fault is stored as a second code in the transmission module (for example P0715, P0730, P0741 or P0750-P0780). Basic scanners often show only P0700.
What could be wrong
- Low, burnt or wrong transmission fluid — the first thing to check
- Failed shift or pressure-control solenoid
- Faulty speed sensor or transmission range sensor
- Wiring or connector problems to the transmission
- Torque converter clutch problem
- Internal transmission wear — the least common cause; we rule out everything else first
Is it safe to drive?
Moderate to high. If the car is in 'limp mode' (stuck in one gear, harsh shifts), get it looked at soon; continued driving can turn a solenoid repair into a transmission replacement.
How we diagnose P0700
We read the transmission module directly with factory-level tools (BMW ISTA, VCDS/ODIS for VW-Audi, Autel pro scanner for other makes) to see the real code behind P0700, check fluid level and condition, and watch live shift data. Many P0700 cases are fluid, a solenoid or a sensor, not a new transmission.
If your car failed the NJ emissions inspection because of P0700, the checkup and estimate are free. Have a dealer estimate for the same repair? We typically do it for 30–50% less.
Common questions about P0700
Does P0700 mean I need a new transmission?
Usually not. P0700 just means the transmission computer stored a fault. The actual code is often a solenoid, sensor, fluid or wiring issue. We read the transmission module directly to find it.
Why does my scanner only show P0700?
Basic code readers talk to the engine computer only. The real fault is stored in the transmission module, which needs a professional scan tool. Bring the car to us and we will pull the full code list.
Can I drive with P0700?
If the car shifts normally, you can drive it to the shop. If it is stuck in one gear or shifting harshly, limit driving until it is diagnosed.
Do you work on BMW, Audi, VW and Mercedes transmissions?
Yes. We use BMW ISTA and VCDS/ODIS for German cars and Autel professional tools for everything else. We also handle transmission adaptations and software updates after repairs.
P0700 repair near you in Wayne, NJ
RS Auto Werks, 145 Garside Ave, Wayne, NJ 07470 — minutes from Route 23 and Route 46, serving Wayne, Totowa, Little Falls, Woodland Park, Pequannock, Pompton Lakes, Lincoln Park, Fairfield, Franklin Lakes, Kinnelon, Montville, Cedar Grove, Clifton, Paterson. Looking for a different code? See our guide to 332 common check engine and transmission codes.