D. Code Listings and Procedures. |
| If Codes Read |
Recommended Procedures |
Main
Code |
Sub
Code |
|
Code 13 XX ECU Input
Voltage Low. |
| 13 |
12 |
1. Check:
a. Battery direct ground and power connections are tight and clean.
b. Vehicle batteries are charged.
c. Vehicle charging system is not over, or under-charging.
d. VIM fuse is good.
e. VIM connections are tight, clean and undamaged.
f. Vehicle manufacturer supplied wiring is correct.
g. ECU connectors are tight, clean and undamaged. 2. If all points check, Call United Transmission Exchange (800.5271637). |
ECU Input
Voltage Low |
| 13 |
13 |
ECU Input Voltage
Low (Medium) |
| 13 |
23 |
ECU Input
Voltage High |
| Code 14 XX Oil Level Sensor. |
| 14 |
12, 23 |
1. Check:
a. Is transmission equipped with oil level sensor?
b. Engine speed sensor, output speed sensor, temperature sensor, and oil level sensor are working correctly.
c. Wiring harness has no opens, shorts to ground, or shorts to battery. 2. If all points check, Call United Transmission Exchange (800.5271637). |
| Oil Level Sensor |
| Code 21 XX Throttle Position Sensor. |
| 21 |
12, 23 |
1. Check:
a. TPS connector is properly connected.
b. End of TPS cable is pulled out properly.
c. Engine fuel lever is in idle position.
d. Engine fuel lever provides proper amount of stroke on TPS cable.
e. Wiring harness to TPS has no opens, shorts between wires, or shorts to ground. 2. If able, replace TPS. 3. If all points check, Call United Transmission Exchange (800.5271637). |
| Throttle Position Sensor |
| Code 22 XX Speed Sensors. |
| 22 |
14, 15, 16 |
1. Check:
a. Speed sensor connectors are tight, clean, and undamaged.
b. Speed sensor mounting bolts are properly torque (24-29 N•m (18-21 lb ft)).
c. Wiring harness to sensors has no opens, shorts between wires, or shorts to ground. 2. If all points check, Call United Transmission Exchange
(800.5271637). |
| Speed Sensors |
| Code 23 XX Shift Selectors. |
| 23 |
12, 13, 14 |
1. Check:
a. ECU connectors are tight, clean, and undamaged.
b. Remote shift selector connector is tight and jumper wire is cut.
c. Wiring harness to sensors has no opens, shorts between wires, or shorts to ground. 2. If able, replace shift selector(s). 3. If all points check, Call United Transmission Exchange (800.5271637). |
| Shift Selectors |
| Code 24 XX Sump Oil Temperature Cold. |
| 24 |
12 |
1. Check:
a. Air temperature is below -32ºC (-25ºF). If yes, this is a correct response for temperature. If no, check that main transmission connector is tight, clean, and undamaged.
b. ECU connectors are tight, clean, and undamaged. 2. If all points check, Call United Transmission Exchange (800.5271637). |
| Sump Oil Temperature Cold |
| 24 |
23 |
1. Let vehicle idle with parking brake applied, wheels choked, and vehicle level. Check:
a. Correct dipstick is installed.
b. Fluid level is correct. If incorrect, then correct the fluid level. If correct, check your engine system overheating, causing transmission to overheat. 2. Check if ECU and transmission connectors are tight, clean, and undamaged. 3. If all points
check, Call United Transmission Exchange (800.5271637). |
| Sump Oil Temperature Hot |
| Code 25 XX Output Speed Sensor and Reading. |
| 25 |
00, 11, 22, 33, 44, 55, 66, 77 |
1. Check:
a. Speed sensor connector is tight, clean, and undamaged.
b. ECU connectors are tight, clean, and undamaged.
c. Fluid level is correct.
d. Sensor mounting bolt torque is correct (24 - 29 N•m (18 - 21 lb ft)).
e. Wiring harness to sensor has no opens, shorts between wires, or shorts to ground. 2. If all points check, Call United Transmission Exchange
(800.5271637). |
| Output Speed Sensor and Reading |
| Code 32 XX C3 Pressure Switch Open. |
| 32 |
00, 33, 55, 77 |
1. Let vehicle idle with parking brake applied, wheels choked, and vehicle level. Check:
a. Correct dipstick is installed.
b. Fluid level is correct 2. Check:
a. Main transmission connector is tight, clean, and undamaged.
b. ECU connectors are tight, clean, and undamaged.
c. Wiring harness has no opens, shorts between wires, or shorts to ground. 3. If all points check, Call United Transmission Exchange
(800.5271637). |
| C3 Pressure Switch Open |
| Code 33 XX Sump Oil Sensor Failure. |
| 33 |
12, 23 |
1. Check:
a. Main transmission connector is tight, clean, and undamaged.
b. ECU connectors are tight, clean and undamaged.
c. Wiring harness has no opens, shorts between wires, or shorts to ground. 2. If all points check, Call United Transmission Exchange
(800.5271637). |
| Sump Oil Sensor Failure |
| Code 34 XX EEPROM. |
| 34 |
12, 13, 14, 15, 16 |
1. If able, recalibrate ECU; if not, replace ECU.
2. If cannot replace ECU, Call United Transmission Exchange (800.5271637). |
| EEPROM |
| Code 35 XX Power Interruption EEPROM Write Interruption. |
| 35 |
00, 16 |
1. Check:
a. ECU connectors are tight, clean and undamaged.
b. VIM connectors are tight, clean, and undamaged.
c. Vehicle manufacturer supplied wiring has correct power and ground connections.
d. Power connections are battery direct.
e. Ground connections are battery direct.
f. Ignition switch connections are correct. 2. If all points check, Call United Transmission Exchange (800.5271637). |
| Power Interruption EEPROM Write Interruption |
| Code 36 XX Hardware / Software Not Compatible. |
| 36 |
00 |
1. If able, reprogram ECU. 2. If able, replace ECU. 3. If ECU cannot be reprogrammed or replaced, Call United Transmission Exchange
(800.5271637). |
| Hardware / Software Not Compatible |
| Code 41 XX Open or Short to Ground in Solenoid Circuit. |
| 41 |
12, 13, 14, 15, 16, 21, 22, 23, 24, 25, 26 |
1. Check:
a. Main transmission connector is tight, clean, and undamaged.
b. ECU connectors are tight, clean, and undamaged.
c. Wiring harness is not pulled too tight, and there is no damaged, chafing, or screws through harness.
d. Wiring harness has no opens, shorts between wires, or shorts to ground. 2. Change wiring harness (optional). 3. If all points check, Call United Transmission Exchange (800.5271637). |
| Open or Short to Ground in Solenoid Circuit |
| Code 42 XX Short to Battery in Solenoid Circuit. |
| 42 |
12, 13, 14, 15, 16, 21, 22, 23, 24, 25, 26 |
1. Check:
a. Main transmission connector is tight, clean, and undamaged.
b. ECU connectors are tight, clean, and undamaged.
c. Wiring harness is not pulled too tight, and there is no damage, chafing, or screws through harness.
d. Wiring harness has no opens, shorts between wires, or shorts to ground.
e. Unauthorized repairs have not been made. 2. Change harness (optional).
3. If all points check, Call United Transmission Exchange (800.5271637). |
| Short to Battery in Solenoid Circuit |
| Code 43 XX Solenoid Low Side Circuit, Open Driver, or Wire Shorted to Ground. |
| 43 |
21, 25, 26 |
1. Check:
a. Transmission connector is tight, clean, and undamaged.
b. ECU connectors are tight, clean, and undamaged.
c. Wiring harness has no opens, shorts between wires, or shorts to ground. 2. If able, replace ECU. 3. If all points check, Call United Transmission Exchange (800.5271637). |
| Solenoid Low Side Circuit, Open Driver, or Wire Shorted to Ground |
| Code 44 XX Solenoid Circuit Short to Ground. |
| 44 |
12, 13, 14, 15, 16, 21, 22, 23, 24, 25, 26 |
1. Check:
a. Transmission connector is tight, clean, and undamaged.
b. ECU connectors are tight, clean, and undamaged.
c. Wiring harness has no opens, shorts between wires, or shorts to ground. 2. If all points check, Call United Transmission Exchange
(800.5271637). |
| Solenoid Circuit Short to Ground. |
| Code 45 XX Solenoid Circuit. |
| 45 |
12, 13, 14, 15, 16, 21, 22, 23, 24, 25, 26 |
1. Check:
a. Transmission connector is tight, clean, and undamaged.
b. ECU connectors are tight, clean, and undamaged.
c. Wiring harness has no opens. 2. If all points check, Call United Transmission Exchange (800.5271637). |
Solenoid Circuit
Open |
| Code 51 XX Offgoing Ratio Test (During Shift). |
| 51 |
01, 10, 12, 21, 23, 24, 35, 42, 43, 45, 46, 53, 64, 65, XY |
1. Check:
a. Output and turbine speed sensor connectors are tight, clean, and undamaged.
b. Speed Sensor wiring harness has no opens, shorts between wires, or shorts to ground. 2. Let vehicle idle with parking brake applied, wheels chocked, and
vehicle level. Check:
a. Correct dipstick is installed.
b. Fluid level is correct. 3. If all points check, Call United Transmission Exchange (800.5271637). |
| Offgoing Ratio Test (During Shift) |
| Code 52 XX Offgoing C3 Pressure Switch (During Shift). |
| 52 |
01, 08, 32, 34, 54, 56, 71, 72, 78, 79, 99, XY |
1. Check:
a. Output and turbine speed sensor connectors are tight, clean, and undamaged.
b. Speed sensor wiring harness has no opens, shorts between wires, or shorts to ground.
c. Main wiring harness to transmission has no shorts between wires or shorts to ground. 2. Let vehicle idle with parking brake applied, wheels chocked, and
vehicle level. Check:
a. Correct dipstick is installed.
b. Fluid level is correct. 3. If all points check, Call United Transmission Exchange (800.5271637). |
| Offgoing C3 Pressure Switch (During Shift) |
| Code 53 XX Offgoing Speed Test (During Shift). |
| 53 |
08, 18,19, 28,29, 38,39, 48,49, 58,59, 68,69, 78,99, XY |
1. Check:
a. Turbine and engine speed sensor connectors are tight, clean, and undamaged.
b. Speed sensor wiring harness has no opens, shorts between wires, or shorts to ground. 2. Let vehicle idle with parking brake applied, wheels chocked, and
vehicle level. Check:
a. Correct dipstick is installed.
b. Fluid level is correct. 3. If all points check, Call United Transmission Exchange (800.5271637). |
| Offgoing Speed Test (During Shift) |
| Code 54 XX Oncoming Ratio Test (After Shift). |
| 54 |
01, 07, 10, 12, 17, 21, 23, 24, 27, 32, 34, 35, 42, 43, 45, 46, 53, 54, 56, 64, 65, 70, 71, 72, 80, 81, 82, 83, 85, 86, 92, 93, 95, 96, 97,XY |
1. Check:
a. Turbine and output speed sensor connectors are tight, clean, and undamaged.
b. Speed sensor wiring harness has no opens, shorts between wires, or shorts to ground. 2. Let vehicle idle with parking brake applied, wheels chocked, and
vehicle level. Check:
a. Correct dipstick is installed.
b. Fluid level is correct. 3. EEPROM calibration is correct for the transmission.
4. If all points check, Call United Transmission Exchange (800.5271637). |
| Oncoming Ratio Test (After Shift) |
| Code 55 XX Oncoming C3 Pressure Switch
(After Switch) |
| 55 |
07,17, 27, 87, 97,XY |
1. Let vehicle idle with parking brake applied, wheels chocked, and vehicle level. Check:
a. Correct dipstick is installed.
b. Fluid level is correct. 2. Check:
a. Output and turbine speed sensor connectors are tight, clean, and undamaged.
b. Speed sensor wiring harness has no opens, shorts between wires, or shorts to ground. 3. Check:
a. Transmission connector is tight, clean, and undamaged.
b. ECU connectors are tight, clean, and undamaged.
c. C3 pressure switch wiring has no opens, shorts between wires, or shorts to ground. 4. If all points check, Call United Transmission Exchange
(800.5271637). |
Oncoming C3 Pressure Switch
(After Switch) |
| Code 56 XX Range Verification Test (Between Shifts). |
| 56 |
00, 11, 22, 33, 44, 55, 66, 77 |
1. Check:
a. Turbine and output speed sensor connectors are tight, clean, and undamaged.
b. Speed sensor wiring harness has no opens, shorts between wires, or shorts to ground.
c. Transmission connector is tight, clean, and undamaged.
d. ECU connectors are tight, clean, and undamaged. 2. Let vehicle idle with parking brake applied, wheels chocked, and vehicle level. Check:
a. Correct dipstick is installed.
b. Fluid level is correct. 3. If all points check, Call United Transmission Exchange (800.5271637). |
| Range Verification Test (Between Shifts) |
| Code 57 XX Range Verification Test (C3). |
| 57 |
11, 22, 44, 66, 88, 99 |
1. Let vehicle idle with parking brake applied, wheels chocked, and vehicle level. Check:
a. Correct dipstick is installed.
b. Fluid level is correct. 2. Check:
a. Output and turbine speed sensor connectors are tight, clean, and undamaged.
b. Speed sensor wiring harness has no shorts between wires or shorts to ground. 3. Check:
a. Transmission connector is tight, clean, and undamaged.
b. ECU connectors are tight, clean, and undamaged.
c. C3 pressure switch wiring has no opens, shorts between wires, or shorts to ground. 4. If all points check, Call United Transmission Exchange
(800.5271637). |
| Range Verification Test (C3) |
| Code 61 XX Retarder Over Temperature. |
| 61 |
00 |
1. Check:
a. Fluid level is correct.
b. Retarder apply system is not allowing Retarder and throttle to be applied at the same time.
c. Fluid cooler is adequately sized for load. 2. If all points check, Call United Transmission Exchange (800.5271637). |
| Retarder Over Temperature |
| Code 62 XX Retarder Temperature Sensor. |
| 62 |
12, 23 |
1. Check:
a. Retarder temperature measured with DDR is consistent with code; or determine if code is active using shift selector.
b. Ambient temperature is above 178ºC (352ºF) or below -45ºC (-49ºF).
c. Sensor connector is tight, clean, and undamaged.
d. ECU connectors are tight, clean, and undamaged.
e. Temperature sensor circuit has no opens, shorts, or shorts to ground 2. If all points check, Call United Transmission Exchange (800.5271637). |
| Retarder Temperature Sensor |
| Code 63 XX Input Function Fault |
| 63 |
00, 26, 40,41 |
1. Check:
a. Input wiring, switches, and connectors to determine why input states are different. 2. If all points check, Call United Transmission
Exchange (800.5271637). |
| Input Function Fault |
| Code 64 XX Retarder Modulation Request Device Fault |
| 64 |
12, 23 |
1. Use DDR to read Retarder counts and identify problem wires. Check wiring for short to battery, ground wire open,
or short to ground. 2. If all points check, Call United Transmission Exchange (800.5271637). |
| Retarder Modulation Request Device Fault |
| Code 65 00 Engine Rating High (Computer-Controlled Engines Only) |
| 65 |
00 |
1. Check if engine rating or governor speed is too high for transmission. 2. If all points check, Call United Transmission Exchange (800.5271637). |
| Engine Rating High (Computer-Controlled Engines Only) |
| Code 66 00 Serial Communications Interface Fault. |
| 66 |
00 |
1. Check:
a. Serial connection to engine computer is tight, clean, and undamaged.
b. SCI wiring harness has no opens, shorts, or shorts to ground.
c. If DDR is not available, also be sure that transmission ECU connections are tight, clean, and undamaged. 2. If all points check, Call United
Transmission Exchange (800.5271637). |
| Serial Communications Interface Fault |
| Code 69 XX ECU Malfunction |
| 69 |
12, 13, 14, 15, 16, 21, 22, 23, 24, 25, 26, 32, 33, 34, 35, 36, 41 |
1. Clear diagnostic code and retry vehicle start. 2. If code recurs, reprogram ECU. 3. If able, replace ECU. 4. If code continues to recur, Call United Transmission Exchange (800.5271637). |
| ECU Malfunction |
| Back To The Information Garage |
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