Hey, I was just researching the p1750 code today. What I suggest doing is going a little further in the testing.
The OBD-II scan tool will pull up the 1750, which is the assembly of solenoids in the transmission. There is also a test that you can do that will pull up specifically which solenoid is malfunctioning.
You will need an analog voltmeter. Connect it to pins 4 and 6 of the OBD-II connector.
<------------------------------->
\ 1 2 3 4 5 6 7 8 /
\9 10 11 12 13 14 15 16/
And watch the codes display on the meter
It will move in series of long then shorts with a pause between
The number of times long is the first number, and the number of times short is the second number.
Say it blinks 4 long, and 6 short, your number is 46. All of these codes are transmission related.
I’m going to type out all of the codes for you all to read
11 - High TP Sensor output
12 low TP sensor output
13 Defective TP Sensor
14 Improperly adjusted TP sensor
15 open oil temp sensor circuit
16 shorted oil temp sensor circuit
21 open kickdown servo switch circuit
22 shorted kickdown servo switch circuit
23 open ignition pulse signal circuit
28 shorted stoplight switch circuit
31 open pulse generator A circuit
32 open pulse generator B circuit
36 shorted park/neutral position switch circuit
37 open park/neutral position switch circuit
41 open shift control solenoid valve "A" circuit
42 shorted shift control solenoid valve "A" circuit
43 open shift control solenoid valve "B" circuit
44 shorted shift control solenoid valve "B" circuit
45 open pressure control solenoid valve circuit
46 shorted pressure control solenoid valve circuit
47 open TCC Solenoid valve circuit
48 shorted TCC solenoid valve circuit
49 Defective TCC solenoid valve system
51 Incorrect 1st gear ratio
52 incorrect 2nd gear ratio
53 incorrect 3rd gear ratio
54 incorrect 4th gear ratio
58 Stuck On TCC Solenoid system
59 Abnormal Vibration
61 Shorted Torque reduction request signal line or Open Torque converter reduction execution signal line
62 Open circuit on Torque reduction request signal line
63 shorted circuit on torque reduction execution line
81 Open pulse generator "A" circuit (1)
82 Open pulse generator "B" circuit (1)
83 Open or shorted sift control solenoid valve "A" circuit (2)
84 Open or shorted sift control solenoid valve "B" circuit (2)
85 open or shorted pressure control solenoid valve (1)
86 Incorrect gear ratio (2)(3)
(1): When this DTC is set, transaxle will not shift from 3rd gear with gearshift lever in D Position, or shift from 2nd gear with the gearshift lever in "2" or "L" position
(2): When this DTC is set, transaxle will not shift from 3rd gear with gearshift lever in "D"
(3): This DTC will set only with DTC's No. 51-54
The reason that I was doing this research is because I have a 99 Eclipse spyder (2.4L) that's throwing the P1750 and my transmission just shifts from 4th to 3rd rather erratically when the trans oil temp comes up to normal operation temp.
It turns out my car was putting out a 49, 54, and 86. I’m going to be installing a new TCC solenoid some time in the future and hoping that will fix my problem. If any of you have any input on just replacing the TCC solenoid please let me know.
Just so I don't get into any trouble, I got all of this information from Mitchell.
The OBD-II scan tool will pull up the 1750, which is the assembly of solenoids in the transmission. There is also a test that you can do that will pull up specifically which solenoid is malfunctioning.
You will need an analog voltmeter. Connect it to pins 4 and 6 of the OBD-II connector.
<------------------------------->
\ 1 2 3 4 5 6 7 8 /
\9 10 11 12 13 14 15 16/
And watch the codes display on the meter
It will move in series of long then shorts with a pause between
The number of times long is the first number, and the number of times short is the second number.
Say it blinks 4 long, and 6 short, your number is 46. All of these codes are transmission related.
I’m going to type out all of the codes for you all to read
11 - High TP Sensor output
12 low TP sensor output
13 Defective TP Sensor
14 Improperly adjusted TP sensor
15 open oil temp sensor circuit
16 shorted oil temp sensor circuit
21 open kickdown servo switch circuit
22 shorted kickdown servo switch circuit
23 open ignition pulse signal circuit
28 shorted stoplight switch circuit
31 open pulse generator A circuit
32 open pulse generator B circuit
36 shorted park/neutral position switch circuit
37 open park/neutral position switch circuit
41 open shift control solenoid valve "A" circuit
42 shorted shift control solenoid valve "A" circuit
43 open shift control solenoid valve "B" circuit
44 shorted shift control solenoid valve "B" circuit
45 open pressure control solenoid valve circuit
46 shorted pressure control solenoid valve circuit
47 open TCC Solenoid valve circuit
48 shorted TCC solenoid valve circuit
49 Defective TCC solenoid valve system
51 Incorrect 1st gear ratio
52 incorrect 2nd gear ratio
53 incorrect 3rd gear ratio
54 incorrect 4th gear ratio
58 Stuck On TCC Solenoid system
59 Abnormal Vibration
61 Shorted Torque reduction request signal line or Open Torque converter reduction execution signal line
62 Open circuit on Torque reduction request signal line
63 shorted circuit on torque reduction execution line
81 Open pulse generator "A" circuit (1)
82 Open pulse generator "B" circuit (1)
83 Open or shorted sift control solenoid valve "A" circuit (2)
84 Open or shorted sift control solenoid valve "B" circuit (2)
85 open or shorted pressure control solenoid valve (1)
86 Incorrect gear ratio (2)(3)
(1): When this DTC is set, transaxle will not shift from 3rd gear with gearshift lever in D Position, or shift from 2nd gear with the gearshift lever in "2" or "L" position
(2): When this DTC is set, transaxle will not shift from 3rd gear with gearshift lever in "D"
(3): This DTC will set only with DTC's No. 51-54
The reason that I was doing this research is because I have a 99 Eclipse spyder (2.4L) that's throwing the P1750 and my transmission just shifts from 4th to 3rd rather erratically when the trans oil temp comes up to normal operation temp.
It turns out my car was putting out a 49, 54, and 86. I’m going to be installing a new TCC solenoid some time in the future and hoping that will fix my problem. If any of you have any input on just replacing the TCC solenoid please let me know.
Just so I don't get into any trouble, I got all of this information from Mitchell.