What causes a P1870 code?

What causes a P1870 code?

As stated earlier, DTC P1870 is produced when the PCM sees a breakaway in the slip ratio while at a cruise. If the ratio breaks away, the cause could be compromised trans components, hydraulics or electronics.

What happens when the torque converter goes out?

When the torque converter starts malfunctioning, you may feel shuddering and even slipping in overdrive. You usually notice your car shuddering because it feels like it’s vibrating. Your car will vibrate even when you’re not going very fast. The shuddering makes the car lag and is very noticeable.

Can you drive with a bad valve body?

But you should not—we repeat, not—drive around with a bad transmission valve body for too long. Over time, a minor issue with your transmission valve body might turn into a major issue with your entire transmission. You’re going to put a huge strain on your transmission when you have a bad transmission valve body.