A/T - A604 Diagnostic Trouble Codes
TECHNICAL BULLETIN # 146DATE: 1992
TRANSMISSION: A-604
SUBJECT: TROUBLE CODES
APPLICATION: CHRYSLER
Transmission trouble codes stored in the controller memory on an A-604 equipped Chrysler can only be retrieved with a scan tool connected to the bus (CCD) connector. Codes which are retrieved from the diagnostic connector located in the engine compartment are engine codes and do not directly relate to transmission codes.
Some scanners may display an unknown trouble code such as B-2. To decipher these codes, first determine the number that the letter represents as follows:
A = 20
B = 30
C = 40
D = 50
E = 60
F = 70
Now add the number displayed in the "unknown code" to the number represented by the letter, to determine the trouble code number.
EXAMPLES:
A-6O4 Diagnostic Fault Codes
CODE FAULT LIMP-IN
11 Internal EATX controller failure Yes
12 Battery was disconnected No
13 Internal EATX controller failure Yes
14 Relay output always on Yes
15 Relay output always off Yes
16 Internal EATX controller failure Yes
17 Internal EATX controller failure Yes
18 Engine speed sensor circuit Yes
19 BUS communication with SBEC No
20 Switched battery Yes
21 OD pressure switch circuit Yes
22 2A pressure switch circuit Yes
23 2A/OD pressure switch circuit Yes
24 LR pressure switch circuit Yes
25 LR/OD pressure switch circuit Yes
26 LR/2A pressure switch circuit Yes
27 All pressure switch circuits Yes
28 Illegal shifter position data No
29 Throttle position signal error No
31 OD hydraulic pressure switch Yes
32 2A hydraulic pressure switch Yes
33 OD/2A hydraulic pressure switch Yes
36** Fault immediately after shift Yes
37 Solenoid switch valve stuck in LU position No
38 Lockup control No
39* Speed/Ratio error Yes
41 LR solenoid circuit Yes
42 2A solenoid circuit Yes
43 OD solenoid circuit Yes
44 UD solenoid circuit Yes
45 Internal EATX controller No
46 UD hydraulic circuit No
47** Solenoid switch valve stuck in LR position Yes
50** Speed/Ratio error in reverse Yes
51** Speed/Ratio error in 1st Yes
52** Speed/Ratio error in 2nd Yes
53** Speed/Ratio error in 3rd Yes
54** Speed/Ratio error in 4th Yes
55** Speed/Ratio error in neutral Yes
56** Turbine sensor error Yes
57** Output sensor error Yes
58** Sensor ground error Yes
60** Inadequate element volume in LR clutch No
61** Inadequate element volume in 2-4 clutch No
62** Inadequate element volume in OD clutch No
63** Inadequate element volume in UD clutch No
* EARLY CONTROLLERS ONLY
** LATE CONTROLLERS ONLY