2002 Saturn L300 Electrical problems

CAPOTONI

MEMBER
2002 SATURN L300
3.0L
6 CYL
AUTOMATIC
106,000 MILES

Car shifts fine until the service with wrench light comes on then jerks into gear. The ses light comes on got codes for oxygen sensor or relay and P1156? Also replaced transmission speed sensor now blower motor (motor is good and runs) but switch and all controls on climate control (air, rear defogger and circulation) do not work and have no charge. Gas gauge goes nuts and key fob will not program.
Do you have a clue?

3 Replies

SATURNTECH9

MECHANIC
30,870 POSTS

For the gas gauge does it go to empty etc?How did you try to program the key fob it requires using a tech2 dealer scan tool?Also as far as the wrench light coming and and the car shifts hard then you turn the key off and on again it shifts normal. You should have a code P1811 for the hard shifting. My guess is your code reader cant read history codes. Usually the wrench light coming on and then shifting hard is a bad pressure control solenoid in the transmission valve body.I have replaced tons of them for that. Does your power door locks work with the door lock switch?With the gas gauge going crazy with the key fobs inop is usually a bad body control module I have replaced tons of them for that. When the gas gauge goes crazy does it ever not start?

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Tuesday, April 15th, 2014 AT 6:32 PM

CAPOTONI

MEMBER
4 POSTS

Yes the gas gauge does go to empty even when I just filled up but so far it always starts. And the door locks work off the door switch not the key fob. Do you know why the blower motor and climate control switches get no power at all after we changed the transmission speed sensor. Thank you for your help.

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Wednesday, April 16th, 2014 AT 10:45 AM

SATURNTECH9

MECHANIC
30,870 POSTS

So you changed the output speed sensor by the axle?Makes no sense to me why you lost power to the climate control and blower from changing that. Also did you check the fuses?

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Wednesday, April 16th, 2014 AT 9:21 PM