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After spending 200 bucks at the dealer for them to tell me they needed $700 dollors to replace my MAF i found this and used it after i cleaned my MAF been working awsome so far knock on wood.
I would suggest using a stop watch it worked for me first try i was amazed how easy it was I dont think ill ever take my car to the dealer again if i can help it.

CHECK ENGINE LIGHT RESET/DIAGNOSTIC PROCEDURE

In car ECM Diagnostics/ECM Reset procedure:

1) Sit in the driver's seat.
2) Turn the ignition key to the ON position and wait three seconds. (Do not start the car.)
3) Fully depress and release the accelerator pedal five times in less than five seconds.
4) Wait exactly seven seconds. Fully depress the accelerator pedal for ten seconds until the MIL light flashes.
5) Release the accelerator pedal and start counting flashes to obtain the four-digit trouble code.

Long flashes (0.6 seconds) indicate the first digit of the code; count the blinks one through nine and write down the first digit. (Ten blinks indicates a zero.)
The next three digits follow in turn in the same fashion except with faster blinks (0.3 second) and a 1.0-second pause between digits.

The ECM code repeats itself until you turn the ignition key to the OFF position, at which point the ECM resets itself to standard get-in-and-drive-the-car mode.
You can look up the trouble codes in the ESM/FSM; there's a bunch of them. In the ESM, refer to page EC-639.
Additionally, if you get four blinks of ten (0000), the ECM is indicating no malfunction.

Clearing

You can clear the code (and the annoying MIL) by holding down the accelerator pedal for more than 10 seconds while in Diagnostic Test Mode II. When you release the pedal, the ECM erases the trouble code(s).

Check engine Codes
REASON...................................CODE

A/T 1ST GR FNCTN....................................0731
A/T 2ND GR FNCTN...................................0732
A/T 3RD GR FNCTN...................................0733
A/T 4TH GR FNCTN...................................0734
A/T TCC S/V FNCTN..................................0744
APP SEN 1/CIRC +5.................................0227
APP SEN 1/CIRC +5.................................0228
APP SEN 2/CIRC +5.................................1227
APP SENSOR +5.......................................1228
ASCD BRAKE SW......................................1572
ASCD SW. ................................................1564
ASCD VHL SPD SEN..................................1574
ATF TEMP SEN/CIRC.................................0710
BRAKE SW/CIRCUT...................................1805
CAN COMM CIRCUIT ................................1000
CAN COMM CIRCUIT.................................1001
CKP SEN/CIRCUIT.....................................0335
CLOSED LOOP-B1....................................1148
CMP SEN/CIRC-B1....................................0340
CTP LEARNING.........................................1225
CTP LEARNING.........................................1226
CYL 1 MISFIRE.........................................0301
CYL 2 MISFIRE.........................................0302
CYL 3 MISFIRE.........................................0303
CYL 4 MISFIRE.........................................0304
ECM.........................................................0605
ECM BACK UP CIRCUIT............................1065
ECT SEN/CIRCUIT.....................................0117
ECT SEN/CIRCUIT....................................0118
ECT SENSOR............................................0125
ENG OVER TEMP.......................................0217
ENG OVER TEMP.......................................1217
ENGINE SPEED SIG...................................0725
ETC ACTR.................................................1121
ETC FUNTION CIRC..................................1122
ETC MOT..................................................1128
ETC MOT PWR...........................................1124
ETC MOT PWR...........................................1126
EVAP GROSS LEAK....................................0455
EVAP PURG FLOW/MON............................0441
EVAP SMALL LEAK....................................0442
EVAP SYS PRES SEN.................................0452
EVAP SYS PRES SEN.................................0453
EVAP VERY SML LEAK...............................0456
EVAP VERY SML LEAK...............................1456
FTT SEN/CIRCUIT.....................................0182
FTT SEN/CIRCUIT.....................................0183
FTT SENSOR.............................................0181
FUEL LEVEL SEN SLOSH...........................0460
FUEL LEVEL SEN/CIRC.............................1464
FUEL LEVEL SENSOR................................0461
FEUL LEVEL SEN/CIRC.............................0462
FUEL LEVEL SEN/CIRC.............................0463
FUEL SYS-LEAN-B1...................................0171
FUEL SYS-RICH-B1...................................0172
H02S1(B1)...............................................0132
H02S1(B1)...............................................0133
H02S1(B1)...............................................0134
H02S1(B1)...............................................1143
H02S1(B1)...............................................1144
H02S1 HTR (B1).......................................0031
H02S1 HTR (B1).......................................0032
H02S2(B1)...............................................0138
H02S2(B1)...............................................0139
H02S2(B1)...............................................1146
H02S2(B1)...............................................1147
H02S2 HTR (B1).......................................0037
H02S2 HTR (B1).......................................0038
IAT SEN/CIRCUIT.....................................0112
IAT SEN/CIRCUIT.....................................0113
IAT SENSOR.............................................0127
INT/V TIM CONT-B1..................................0011
INT/V TIM CONT-B1..................................1111
ISC SYSTEM.............................................0506
ISC SYSTEM.............................................0507
KNOCK SEN/CIRC-B1...............................0327
KNOCK SEN/CIRC-B1...............................0328
L/PRESS SOL/CIRC..................................0745
MAF SEN/CIRCUIT....................................0101
MAF SEN/CIRCUIT....................................0102
MAF SEN/CIRCUIT....................................0103
MAF SENSOR...........................................1102
MIL/CIRC.................................................0650
MULTI CYL MISFIRE..................................0300
NO DTC DETECTED/FURTHER TEST..........FLASHING
NO DTC (NO TROUBLE CODE)..................0000
O/R CLUTCH SOL/CIRC............................1760
P-N POS SW/CIRCUIT...............................1706
PNP SW/CIRC..........................................0705
PURG VOLUME CONT/V............................0444
PURG VOLUME CONT/V.............................0445
PURG VOLUME CONT/V.............................1444
SENSOR POWER/CIRC..............................1229
SFT SOL A/CIRC........................................0750
SFT SOL B/CIRC........................................0755
TCC SOLENOID/CIRC................................0740
THERMSTAT FNCTN...................................0128
TP SEN 1/CIRC.........................................0222
TP SEN 1/CIRC..........................................0223
TP SEN 2/CIRC.........................................1223
TP SEN 2/CIRC.........................................1224
TP SENSOR...............................................0221
TPV SEN/CIRC A/T....................................1705
TW CATALYST SYS-B1...............................0420
VC CUT/V BYPASS/V .................................1491
VC/V BYPASS/V.........................................1490
VEH SPD SEN/CIR AT................................0720
VEH SPEED SEN/CIRC..............................0500
VENT CONTROL VALVE..............................0447
VENT CONTROL VALVE..............................1446
VENT CONTROL VALVE..............................1448
 

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FELLOW X-TRAILERS,

I have a petrol-driven GX 2.5 t30 2007/8. For the second time, my Engine Management Light (EML) has come on straight after topping up the fuel tank at a service station different from the one I usually frequent (Shell). The first time, my trusty mechanic said it was just because of a change of fuel. It was certainly a different brand, but I don't know what exactly was different: octane rating and/or additives. Somehow he managed to turn off the light and I immediately topped up at my regular Shell station.

This second time, again with a different brand, the light came on immediately. It's too much of a coincidence to be indicating a different engine problem, although I may need to keep an open mind. I thought that, if I consumed almost the whole tankful and filled up with Shell petrol, the light would go off on its own. Alas, it has not, and the manual reset using a combination of the ignition switch and accelerator pedal has not worked either. However, I haven't used a stopwatch. Perhaps disconnecting and reconnecting the battery would reset everything (once this worked for me on a Fiat Marea). I've bought an electronic detector device, but, after identifying the code, I don't know what I would do about it? I'd be grateful for any comments and / or tips.
 
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