Hi, I hope someone can help. I have got a 2008 Chrysler Grand Voayger auto 2.8crd. I get an error code p0218( transmission high temperature operation activated) also p0740 Torque converter clutch out of range.

I took it in to the mechanic and they had to do a torque converter recon, at the same time apparently also serviced the valve body. Car was good for a few days then same issues again, this time they said I must replace the valve body. This I did. Car was good again for about 200km then the Engine light came on again. Same error codes. Has anyone had the same issue. Oil cooler seems new. Once codes are reset the gearbox works fine, as soon as the light comes on the gearbox goes all funny.

Hope someone can help

Thanks