My check engine light came on last night on my '94 850 wagon. I plugged in to the A-2 socket and got a 1-1-1 code. I then switched to the A-1 socket and got a 1-1-4 and 1-3-4 fault code, which are 'program selector open circuit or short circuit' and 'incorrect load signal'. I've done some searching, the 1-1-4 sounds like the econ/sport switch but i can't find any info on the 1-3-4 code. I cleared the codes but the check engine light came on again right away. Does anyone have any ideas? Car is running fine. No tranny slips, no flashing arrow. tranny flushed less than 20k miles ago.


TIA
Kurt

Thanks for the info. I just rechecked everything. my 'check engine' light is still on but both the A1 and A2 socket read 1-1-1. Is there a reason the light won't reset? Is there a different socket I should be checking. Looks like I'm spending the rest of the night searching here and and Volvospeed.

Kurt

Following info may help you

DTC 134: INCORRECT LOAD SIGNAL
1) Load signal from ECM provides information to TCM on torque
being delivered by engine. If TCM does not register an incoming load
signal when RPM sensor on transmission gives a signal that input shaft
RPM is greater than about 600 RPM, DTC 134 will set.
2) If DTC 134 is set, check for poor terminal contact in
connectors between TCM and ECM. Also check for an open, short circuit
to voltage, or short circuit to ground in signal wiring between ECM
and TCM. If all circuits are okay, connect scan tool to DLC. Ensure
engine is warm, transmission is in neutral, and A/C is off. Select
SCROLLING VALUES. Load signal should be about 35. If load signal is
okay, replace TCM. If load signal is not okay, replace ECM.