Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSCHEVROLET2006COBALT SS, 4D SEDAN, STANDARDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 731 (CONTINUOUSLY VARIABLE TRANSMISSION (CVT))
2006 Chevrolet Cobalt SS, 4D Sedan, Standard
Section 731 (Continuously Variable Transmission (CVT))
2006 Chevrolet Cobalt SS, 4D Sedan, StandardSECTION Section 731 (Continuously Variable Transmission (CVT))
WARNING: This page is about a different car, the 2011 Honda Insight and 2010 Honda Insight. However, it is still accessible from the selected car via links, so may be relevant.
- Special Tools
- General Troubleshooting Information
- How to Check for DTCs with the Honda Diagnostic System (HDS)
- Symptom Troubleshooting Versus DTC Troubleshooting
- How to Check for DTCs with the SCS Mode (retrieving the flash codes)
- How to Troubleshoot Circuits at the PCM Connectors
- Clear A/T DTCs Procedure
- PCM/TCM Reset
- OBD Status
- How to End a Troubleshooting Session (required after any troubleshooting)
- PCM Updating and Substitution for Testing
- How to Update the PCM
- Substitute the PCM
- Failure Reproduction Technique
- Self-diagnosis
- Fail-Safe Function
- DTC Troubleshooting Index
- Symptom Troubleshooting Index
- Component Location Index
- System Description
- General Operation
- Clutches/Reverse Brake/Planetary Gear/Pulleys
- Power Flow
- Electronic Control System
- Electronic Control
- Pulley Pressure Control/Shift Control
- Grade Logic Control: Ascending Control
- Grade Logic Control: Descending Control
- Shift-Hold Control
- ECON ON mode
- Change the shift map
- Reduce the engine speed increasing ratio
- D-Paddle Shift Mode
- S-Paddle Shift Mode
- Start Clutch Pressure Control
- PCM CVT Control System Electrical Connections-Five-position Transmission
- PCM CVT Control System Electrical Connections-Six-position Transmission
- PCM Inputs and Outputs at Connector A (■) (44P)
- PCM Inputs and Outputs at Connector B ( ) (44P)
- PCM Inputs and Outputs at Connector C (◦) (44P)
- Hydraulic Control
- Hydraulic Flow
- Park Mechanism
- Shift Lock System
- DTC Troubleshooting
- DTC P0107: Manifold Absolute Pressure (MAP) Sensor Circuit Low Voltage; DTC P0108: Manifold Absolute Pressure (MAP) Sensor Circuit High Voltage
- DTC P0335: Crankshaft Position (CKP) Sensor No Signal
- DTC P0336: Range/Performance Problem in Crankshaft Position (CKP) Sensor Circuit
- DTC P0501: Range/Performance Problem in CVT Speed Sensor Circuit
- DTC P0502: Problem in CVT Speed Sensor Circuit
- DTC P062F: Powertrain Control Module (PCM) Internal Control Module Keep Alive Memory (KAM) Error
- DTC P0705: Short in Transmission Range Switch Circuit (Multiple Shift-position Input)
- DTC P0706: Open in Transmission Range Switch Circuit
- DTC P0716: Range/Performance Problem in CVT Input Shaft (Drive Pulley) Speed Sensor Circuit; DTC P0717: Problem in CVT Input Shaft (Drive Pulley) Speed Sensor Circuit (No Signal Input)
- DTC P0721: Range/Performance Problem in CVT Output Shaft (Driven Pulley) Speed Sensor Circuit; DTC P0722: Problem in CVT Output Shaft (Driven Pulley) Speed Sensor Circuit (No Signal Input)
- DTC P0746: CVT Drive Pulley Pressure Control Valve Stuck OFF
- DTC P0777: CVT Driven Pulley Pressure Control Valve Stuck ON
- DTC P0796: CVT Start Clutch Pressure Control Valve Stuck OFF
- DTC P0962: CVT Drive Pulley Pressure Control Valve Circuit Low Voltage
- DTC P0963: CVT Drive Pulley Pressure Control Valve Circuit High Voltage
- DTC P0966: CVT Driven Pulley Pressure Control Valve Circuit Low Voltage
- DTC P0967: CVT Driven Pulley Pressure Control Valve Circuit High Voltage
- DTC P0970: CVT Start Clutch Pressure Control Valve Circuit Low Voltage
- DTC P0971: CVT Start Clutch Pressure Control Valve Circuit High Voltage
- DTC P16C0: PCM CVT Control System Incomplete Update
- DTC P16D7: PCM Internal F-CAN Communication Circuit Malfunction; DTC P16D8: PCM Internal IMA-CAN Communication Circuit Malfunction
- DTC P1860: Inhibitor Solenoid Circuit Low Voltage
- DTC P1861: Inhibitor Solenoid Circuit High Voltage
- DTC P1890: Problem in CVT Speed Control System
- DTC P1891: Problem in Start Clutch Control System
- DTC P1898/P0780: CVT Drive Pulley Pressure Control Valve Stuck ON or CVT Driven Pulley Pressure Control Valve Stuck OFF
- DTC P1899/P0780: CVT Drive Pulley Pressure Control Valve Stuck OFF or CVT Driven Pulley Pressure Control Valve Stuck ON
- DTC P2122: Accelerator Pedal Position (APP) Sensor A (Throttle Position (TP) Sensor D) Circuit Low Voltage Input; DTC P2123: Accelerator Pedal Position (APP) Sensor A (Throttle Position (TP) Sensor D) Circuit High Voltage Input
- DTC U0029: F-CAN Malfunction (BUS-OFF); DTC U0121: F-CAN Malfunction (Powertrain Control Module (PCM)-ABS); DTC U0122: F-CAN Malfunction (Powertrain Control Module (PCM)-VSA); DTC U0155: F-CAN Malfunction (Powertrain Control Module (PCM)-Gauge Control Module); DTC U1205: IMA-CAN Malfunction (Powertrain Control Module (PCM)-Motor Control Module (MCM))
- DTC U0029: F-CAN Malfunction (BUS-OFF); DTC U0122: F-CAN Malfunction (Powertrain Control Module (PCM)-VSA); DTC U0155: F-CAN Malfunction (Powertrain Control Module (PCM)-Gauge Control Module); DTC U1205: IMA-CAN Malfunction (Powertrain Control Module (PCM)-Motor Control Module (MCM))
- DTC U0038: IMA-CAN Malfunction (BUS-OFF)
- DTC U0301: PGM-FI System and A/T System Program Version Mismatch
- DTC U0302: PCM-FI System and A/T System Program Version Mismatch
- Road Test
- Stall Speed Test
- Pressure Test
- CVT Clutch Pressure Control Solenoid Valve Test
- CVT Drive Pulley Pressure Control Solenoid Valve Test
- CVT Driven Pulley Pressure Control Solenoid Valve Test
- Inhibitor Solenoid Test
- Lower Valve Body Removal/Installation
- CVT Clutch Pressure Control Solenoid Valve Replacement
- CVT Drive Pulley Pressure Control Solenoid Valve Replacement
- CVT Driven Pulley Pressure Control Solenoid Valve Replacement
- Inhibitor Solenoid Replacement
- CVT Input Shaft (Drive Pulley) Speed Sensor Replacement
- CVT Output Shaft (Driven Pulley) Speed Sensor Replacement
- Vehicle Speed Sensor Replacement
- Start Clutch Pressure Control Calibration Procedures
- Start Clutch Check
- CVT Fluid Level Check
- CVT Fluid Replacement
- Transmission Removal
- Drive Plate Removal/Installation
- Transmission Installation
- CVTF Cooler Cleaning
- CVTF Cooler Hose Replacement
- CVTF Filter Replacement
- Shift Lever Removal
- Shift Lever Installation
- Shift Lever Disassembly/Reassembly
- Shift Cable Replacement
- Shift Cable Adjustment
- Transmission Disassembly
- Transmission Reassembly
- A/T Gear Position Indicator
- Component Location Index
- Circuit Diagram
- Transmission Range Switch Test
- Transmission Range Switch Replacement
- Paddle Shifter + (Upshift Switch) Circuit Troubleshooting
- Paddle Shifter - (Downshift Switch) Circuit Troubleshooting
- Paddle Shifter + (Upshift Switch) or Paddle Shifter - (Downshift Switch) Replacement
- A/T Interlock System
- Lower Valve Body
- Flywheel Housing
- End Cover
- Intermediate Housing
- Transmission Housing
- Input Shaft
- Final Drive Shaft
- CVT Differential
RENDER: 1.0x
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.