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Old 06-29-2005, 04:06 PM   #1
blazee
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**Transmission Codes - What They Mean and What Happens**

DTC = Description = DTC type = *Default Action

P0502 = Vehicle Speed Sensor (VSS) -Low Input = A = * DTC P502 will be stored in PCM history * Second gear only * Maximum line pressure * Freeze shift adapts from being updated * Inhibit TCC engagement

P0560 = System Voltage Malfunction = D = *DTC P0560 will be stored in PCM history *All transmission output devices are off *Freeze 1-2 shift adapts from being updated

P0712 = Transmission Fluid Temperature (TFT) Sensor Circuit -Low Input (high temperature indicated) = B = *DTC P0712 will be stored in PCM history *Transmission default temperature will be 135ēC (275ēF) *Freeze 1-2 shift adapts from being updated

P0713 = Transmission Fluid Temperature (TFT) Sensor Circuit -High Input(low temperature indicated) = B = *DTC P0713 will be stored in PCM history *Transmission default temperature will be 135ēC (275ēF) *Freeze 1-2 shift adapts from being updated

P0719 = Brake Switch Circuit - Low Input = D = *DTC P0719 will be stored in PCM history

P0724 = Brake Switch Circuit - High Input = D = *DTC P0724 will be stored in PCM history *Freeze 1-2 shift adapts from being updated

P0742 = Torque Converter Clutch (TCC) stuck ON = A = *DTC P0742 will be stored in PCM history *Freeze 1-2 shift adapts from being updated

P0748 = Pressure Control Solenoid (PCS) Circuit – Electrical = D = *DTC P0748 will be stored in PCM history *Freeze 1-2 shift adapts from being updated

P0751 = 1-2 Shift Solenoid – Performance = B = *DTC P0751 will be stored in PCM history

P0753 = 1-2 Shift Solenoid – Electrical = A = *DTC P0753 will be stored in PCM history *Maximum line pressure *If in hot mode, force TCC on in 3rd and 4th gear when brake not applied and downshift not requested *Inhibit downshifts to 2nd when speed is greater than 30 mph *Freeze 1-2 shift adapts from being updated

P0756 = 2-3 Shift Solenoid – Performance = B = *DTC P0756 will be stored in PCM history

P0758 = 2-3 Shift Solenoid – Electrical = A = *DTC P0758 will be stored in PCM history *Third gear only *Freeze 1-2 shift adapts from being updated *Maximum line pressure *Inhibit TCC engagement

P1810 = Pressure Switch Assembly (PSA) Circuit Malfunction = B = *DTC P1810 will be stored in PCM history *D2 line pressure *D4 shift pattern *Freeze 1-2 shift adapts from being updated

P1812 = Transmission Fluid Overtemperature = D = *DTC P1812 will be stored in PCM history *Freeze 1-2 shift adapts from being updated

P1860 = TCC PWM Solenoid Circuit – Electrical = A = *DTC P1860 will be stored in PCM history *Inhibit TCC engagement *Inhibit 4th gear if in hot mode *Freeze 1-2 shift adapts from being updated

P1864 = TCC Solenoid Circuit – Electrical = A = *DTC P1864 will be stored in PCM history *Inhibit TCC engagement *Inhibit 4th gear if in hot mode *Freeze 1-2 shift adapts from being updated *Maximum line pressure

P1870 = Transmission Component Slipping = A = *DTC P1870 will be stored in PCM history *Inhibit TCC engagement *Inhibit 4th gear if in hot mode *Freeze 1-2 shift adapts from being updated *Maximum line pressure

P1886 = 3-2 Control Solenoid Circuit – Electrical = A = *DTC P1886 will be stored in PCM history *Soft landing into 3rd gear *Inhibit TCC engagement *Freeze 1-2 shift adapts from being updated *Maximum line pressure *TCC engaged in 4th

* DTC types

“A” Emission related, will turn on the MIL after first failure
“B” Emission related, will turn on the MIL after two consecutive trips with failure
“C” Non-emissions related, will turn on the MIL on first failure
“D” Non-emissions related, no lamp
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