Multiple C codes, decision tree says replace the CPU?

SOURCE: Check Engine Light

I had the problem with the engine light and the ESC light on. At the same time the car would not accelerate. I disconnected and reconnected the battery and works fine now.

SOURCE: My 2003 Hyundai Santa Fe ABS light is staying on

Here are all the possible problems which can turn on your ABS light.

C1101 Battery voltage over volt: 18V or more ○ ○ BR - 69
C1102 Battery voltage low volt: 9.5V or less ○ ○ BR - 69
C1200 FL wheel sensor: open or short to ground ○ ○ BR - 66
C1201 - Range/Performance: speed jump or damaged exciter ○ ○ BR - 67
C1202 - No signal: air-gap error or wrong excite ○ ○ BR - 68
C1203 FR wheel sensor: open or short to ground ○ ○ BR - 66
C1204 - Range/Performance: speed jump or damaged exciter ○ ○ BR - 67
C1205 - No signal excite: air-gap error or wrong excite ○ ○ BR - 68
C1206 RL wheel sensor: open or short to ground ○ ○ BR - 66
C1207 - Range/Performance: speed jump or damaged exciter ○ ○ BR - 67
C1208 - No signal excite: air-gap error or wrong excite ○ ○ BR - 68
C1209 RR wheel sensor: open or short to ground ○ ○ BR - 66
C1210 - Range/Performance: speed jump or damaged exciter ○ ○ BR - 67
C1211 No signal: air-gap error or wrong excite ○ ○ BR - 68
C1604 ECU hardware: ECU internal or valve failure ○ ○ BR - 70
C2112 Valve relay: valve relay or fuse failure ○ ○ BR - 70
C2402 Motor-Electrical: open or short to battery, motor relay, fuse or motor lock fail ○ ○ BR - 71
C1503 TCS switch failure δ ○
C1605 CAN Hardware failure δ ○ BR - 71
C1610 CAN Bus off failure δ ○ BR - 71
C1611 EMS Time-out failure δ ○ BR - 71
C1612 TCM Time-out failure δ ○ BR - 71
C1613 TCM Un-matching failure δ ○ BR - 71
C2227 Brake disc overheat δ ○
C1274 G-Sensor signal fail (only 4WD) ○ ○ BR - 72
C1275 G-Sensor open or short to ground (only 4WD) ○ ○ BR - 72
You'll need a scanner which is compatible with Hyundai's ABS system to retrieve any DTC's (Diagnostic Trouble Codes) stored in its computer. Any time the ABS light comes on, there's a DTC stored in its computer - that code will tell you where the problem exists. Then you can go from there.

SOURCE: ESC ABS light stays on is there a recall on 2006

if there is a recall the dealer will send you papers to inform you, what probably happened is you hit the brakes really hard, locked them up and it blew the abs relay.

SOURCE: 2001 Elantra stall, loss of power. Driving at

I am having the exact same problem with my 2001 Hyundai Elantra. I was told that the engine code that comes up when the sensor is on is called "Absolute Pressure In The Manifold". I was told by a "Hyundai Specialist" that when that code comes up it usually means that the seal on the manifold is Fuct. When my mechanic checked that out for me he had noticed that my manifold had 4 cracks in it(can varify cause he showed me). He replaced the manifold and gasket. The car ran fine for about 2-3 days and since then the problem has since come back and my check engine light will no longer go on/off it only stays on. Because of the check engine light always staying on I have noticed that on many occasions my car will hiccup many times in a row. The only way to stop the hiccup I have noticed is to take my foot right of the gas for approx. 2-3 sec then car will continue without hiccup(till it happends all over again). All in all I have been having this problem now for approx. 1 year and if there is somehow someway it could be repaired I would appretiate it.

SOURCE: 2001 Hyundai Santa Fe - Engine Code P1602, stuck in gear

Im having the same problem with my 02 Santa Fe. How do i go about fixing this problem? And is it costly? Please help