Diagnostic Trouble Code Identification (1999 C/K 800 -- 4L60-E)
DTC
| Description
| DTC Type*
| Default Action
|
P0218
| Transmission Fluid Overtemperature
| D
| The PCM/VCM freezes shift adapts
from being updated
|
P0502
| Vehicle Speed Sensor Circuit--Low
Input
| B
|
| • | The PCM/VCM commands second gear only below 3000 RPM |
| • | The PCM/VCM commands maximum line pressure |
| • | The PCM/VCM freezes shift adapts from being updated |
| • | The PCM/VCM inhibits TCC engagement |
|
P0503
| Vehicle Speed Sensor Circuit--Intermittent
| B
|
| • | The PCM/VCM commands a soft landing to second gear |
| • | The PCM/VCM commands maximum line pressure |
| • | The PCM/VCM inhibits TCC engagement |
| • | The PCM/VCM inhibits fourth gear if the transmission is in hot
mode |
| • | The PCM/VCM freezes shift adapts from being updated |
|
P0711
| Transmission Fluid Temperature Sensor Circuit--Range/Performance
| D
|
| • | The PCM/VCM uses a transmission fluid temperature default value
based on engine coolant, engine run time and IAT at startup |
| • | The PCM/VCM freezes shift adapts from being updated |
|
P0712
| Transmission Fluid Temperature Sensor Circuit--Low
Input
| D
|
| • | The PCM/VCM uses a transmission fluid temperature default value
based on engine coolant , engine run time and IAT at startup |
| • | The PCM/VCM freezes shift adapts from being updated |
|
P0713
| Transmission Fluid Temperature Sensor Circuit--High
Input
| D
|
| • | The PCM/VCM uses a transmission fluid temperature default value
based on engine coolant , engine run time and IAT at startup |
| • | The PCM/VCM freezes shift adapts from being updated |
|
P0719
| Brake Switch Circuit--Low Input
| D
| The PCM/VCM
disregards the brake switch input for TCC scheduling
|
P0724
| Brake Switch Circuit--High Input
| D
| --
|
P0740
| Torque Converter Clutch Enable Solenoid Circuit--Electrical
| A (4.3L)
B (4.8L and 5.3L)
|
| • | The PCM/VCM inhibits TCC engagement |
| • | The PCM/VCM inhibits 4th gear if the transmission is in hot mode |
| • | The PCM/VCM freezes shift adapts from being updated |
|
P0742
| Torque Converter Clutch System--Stuck ON
| B
| The
PCM/VCM freezes shift adapts from being updated
|
P0748
| Pressure Control Solenoid Circuit--Electrical
| D
|
| • | The PCM/VCM freezes shift adapts from being updated |
| • | The PC solenoid valve is OFF |
|
P0751
| 1-2 Shift Solenoid Valve--Performance
| A
|
| • | The PCM/VCM freezes shift adapts from being updated |
| • | The PCM/VCM commands D2 line pressure |
| • | The PCM/VCM inhibits 3-2 downshifts if the vehicle speed is greater
than 48 km/h (30 mph) |
|
P0753
| 1-2 Shift Solenoid Circuit--Electrical
| A (4.3L)
B (4.8L and 5.3L)
|
| • | The PCM/VCM commands D2 line pressure |
| • | The PCM/VCM inhibits 3-2 downshifts if the vehicle speed is greater
than 48 km/h (30 mph) |
| • | The PCM/VCM freezes shift adapts from being updated |
|
P0756
| 2-3 Shift Solenoid Valve--Performance
| A
|
| • | The PCM/VCM commands third gear only |
| • | The PCM/VCM commands maximum line pressure |
| • | The PCM/VCM inhibits TCC engagement |
| • | The PCM/VCM freezes shift adapts from being updated |
|
P0758
| 2-3 Shift Solenoid Circuit--Electrical
| A
|
| • | The PCM/VCM commands 3rd gear only |
| • | The PCM/VCM freezes shift adapts from being updated |
| • | The PCM/VCM commands maximum line pressure |
| • | The PCM/VCM inhibits TCC engagement |
|
P0785
| 3-2 Shift Solenoid Circuit--Electrical
| A
|
| • | The PCM/VCM commands a soft landing to 3rd gear |
| • | The PCM/VCM inhibits TCC engagement |
| • | The PCM/VCM commands maximum line pressure |
| • | The PCM/VCM inhibits 4th gear if the transmission is in hot mode |
| • | The PCM/VCM freezes shift adapts from being updated |
|
P1810
| Transmission Fluid Pressure Manual Valve Position Switch
Assembly Circuit Malfunction
| B
|
| • | The PCM/VCM commands D2 line pressure |
| • | The PCM/VCM commands D4 shift pattern |
| • | The PCM/VCM freezes shift adapts from being updated |
|
P1860
| Torque Converter Clutch Pulse Width Modulation Solenoid
Circuit--Electrical
| A (4.3L)
B (4.8L and 5.3L)
|
| • | The PCM/VCM inhibits TCC engagement |
| • | The PCM/VCM inhibits 4th gear if the transmission is in hot mode |
| • | The PCM/VCM freezes shift adapts from being updated |
|
P1870
| Transmission Component Slipping
| B
|
| • | The PCM/VCM inhibits TCC engagement |
| • | The PCM/VCM commands maximum line pressure |
| • | The PCM/VCM inhibits 4th gear if the transmission is in hot mode |
| • | The PCM/VCM freezes shift adapts from being updated |
|
P1875
| 4 Wheel Drive Low Switch Circuit Malfunction
| B
| The PCM/VCM commands a normal shift pattern
|
*DTC Types:
- A-Emission-related, turns
the MIL ON after the first failure.
- B-Emission-related,
turns the MIL ON after two consecutive trips with failure.
- C-Non-emission-related, turns the service lamp ON after the first
failure.
- D-Non-emission-related, no lamps.
|
