Wife said car(and I verified) that she lost speed control, got a check
engine light, and the transmission doesn't want to respond correctly (ex.
slow to engage when accelerating after having slowed down for an off ramp,
or speeding up to pass).

First engine scan gave the following errors:

KOEO Codes-                      
23 Throttle Position Sensor is out of range
Memory Codes-                    
31 EGR valve position or exhaust pressure transducer sensor voltage low
63 Throttle Position Sensor voltage too low or grounded    
KOER Codes-                      
12 Cannot control RPM during self check or Idle Speed Control Problem
23 Throttle Position Sensor is out of range

Cleared codes, unplugged TPS and scanned a second time and got these errors:

KOEO Codes-                    
98 Electronic Pressure Control driver failure in control module (or hard
fault)  
63 Throttle Position Sensor voltage too low or grounded    
Memory Codes-                  
11 System Pass                  
KOER Codes-                      
12 Cannot control RPM during self check or Idle Speed Control Problem
23 Throttle Position Sensor is out of range

It's having issues obviously, but it's the Memory code 11 that throws me.
That seems to signify that the electronics are fine but the 98 seems to
mean everything is screwed. This car has some age on it but was kept (I
though well) by the previous family member. Could the TPS, EGR and Speed
Control all be bad at the same time? Or am I looking at a bad ECU supplying
bad voltage to the sensors? I thought I was looking at replacing an ECU at
first. All the parts put together aren't too much to replace, but I'd
prefer a simple fix. Yes, it passed a wiggle test.