Hey guys,

I recently had the check engine light come on and using the volvo diagnostic tool on the vehicle I came up with a 134 code that pointed me to a "ICM faulty load". I have looked all over forums and websites but I cannot seem to get any clairity on the severity of this issue. Does this sound like something that needs fixed right away?

The car currently is running great FYI.

Thanks

 

Found this from Matthewsvolvosite;

"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."

I believe that is out of the manual. I'll look at more info about code a1 134 later.

Also on that forum the guy took out the ecus and sprayed them with electrical contact cleaner. Most seemed to say that a bad electrical wire or faulty ecu reading might be the cause. Just some info I gleaned.