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 MANUALSCHEVROLET2008HHR LT, 2.4 P, AUTOMATICREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 168 (CONTINUOUSLY VARIABLE TRANSMISSION (CVT))DTC TROUBLESHOOTING INDEX
2008 Chevrolet HHR LT, 2.4 P, Automatic
DTC Troubleshooting Index
2008 Chevrolet HHR LT, 2.4 P, AutomaticSECTION DTC Troubleshooting Index
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.
NOTE:
Before you troubleshoot, record all freeze data and any on-board snapshot with the HDS, and review General Troubleshooting Information (see GENERAL TROUBLESHOOTING INFORMATION
).
DTC TROUBLESHOOTING CHART
| DTC(1) | Two Drive Cycle Detection | D Indicator | MIL | Detection Item | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| P0107 (12) | - | Blinks | ON | Manifold Absolute Pressure (MAP) Sensor Circuit Low Voltage | ||||||||||
| P0108 (02) | - | Blinks | ON | Manifold Absolute Pressure (MAP) Sensor Circuit High Voltage | ||||||||||
| P0335 (88) | - | Blinks | ON | Crankshaft Position (CKP) Sensor No Signal | ||||||||||
| P0336 (88) | - | Blinks | ON | Range/Performance Problem in Crankshaft Position (CKP) Sensor Circuit | ||||||||||
| P0501 (36)(2) | - | Blinks | ON | Range/Performance Problem in CVT Speed Sensor Circuit | ||||||||||
| P0502 (36)(2) | - | Blinks | ON | Problem in CVT Speed Sensor Circuit | ||||||||||
| P062F (-) | - | Blinks | ON | Powertrain Control Module (PCM) Internal Control Module Error | ||||||||||
| P0705 (5)(2) | - | Blinks | ON | Short in Transmission Range Switch Circuit (Multiple Shift-position Input) | ||||||||||
| P0706 (6)(2) | ◦ | OFF | ON | Open in Transmission Range Switch Circuit | ||||||||||
| P0716 (34)(2) | - | Blinks | ON | Range/Performance Problem in CVT Input Shaft (Drive Pulley) Speed Sensor Circuit | ||||||||||
| P0717 (34)(2) | - | Blinks | ON | Problem in CVT Input Shaft (Drive Pulley) Speed Sensor Circuit (No Signal Input) | ||||||||||
| P0721 (35)(2) | - | Blinks | ON | Range/Performance Problem in CVT Output Shaft (Driven Pulley) Speed Sensor Circuit | ||||||||||
| P0722 (35)(2) | - | Blinks | ON | Problem in CVT Output Shaft (Driven Pulley) Speed Sensor Circuit (No Signal Input) | ||||||||||
| P0746 (104) | ◦ | Blinks | ON | CVT Drive Pulley Pressure Control Valve Stuck OFF | ||||||||||
| P0777 (105) | ◦ | Blinks | ON | CVT Driven Pulley Pressure Control Valve Stuck ON | ||||||||||
| P0796 (103) | ◦ | Blinks | ON | CVT Start Clutch Pressure Control Valve Stuck OFF | ||||||||||
| P0962 (38)(2) | - | Blinks | ON | CVT Drive Pulley Pressure Control Valve Circuit Low Voltage | ||||||||||
| P0963 (38)(2) | - | Blinks | ON | CVT Drive Pulley Pressure Control Valve Circuit High Voltage | ||||||||||
| P0966 (39)(2) | - | Blinks | ON | CVT Driven Pulley Pressure Control Valve Circuit Low Voltage | ||||||||||
| P0967 (39)(2) | - | Blinks | ON | CVT Driven Pulley Pressure Control Valve Circuit High Voltage | ||||||||||
| P0970 (32)(2) | - | Blinks | ON | CVT Start Clutch Pressure Control Valve Circuit Low Voltage | ||||||||||
| P0971 (32)(2) | - | Blinks | ON | CVT Start Clutch Pressure Control Valve Circuit High Voltage | ||||||||||
| P16C0 (-) | - | OFF | ON | Powertrain Control Module (PCM) CVT Control System Incomplete Update | ||||||||||
| P16D7 (107) | - | Blinks | OFF | Powertrain Control Module (PCM) Internal F-CAN Communication Circuit Malfunction | ||||||||||
| P16D8 (120) | - | Blinks | ON | Powertrain Control Module (PCM) Internal IMA-CAN Communication Circuit Malfunction | ||||||||||
| P1860 (33)(2) | - | Blinks | OFF | Inhibitor Solenoid Circuit Low Voltage | ||||||||||
| P1861 (33)(2) | - | Blinks | OFF | Inhibitor Solenoid Circuit High Voltage | ||||||||||
| P1890 (42) | - | Blinks | OFF | Problem in CVT Speed Control System | ||||||||||
| P1891 (43) | - | Blinks | OFF | Problem in Start Clutch Control System | ||||||||||
| P1898 (100)/P0780 (100) | ◦ | Blinks | ON | CVT Drive Pulley Pressure Control Valve Stuck ON or CVT Driven Pulley Pressure Control Valve Stuck OFF | ||||||||||
| P1899 (100)/P0780 (100) | ◦ | Blinks | ON | CVT Drive Pulley Pressure Control Valve Stuck OFF or CVT Driven Pulley Pressure Control Valve Stuck ON | ||||||||||
| P2122 (20) | - | Blinks | ON | Accelerator Pedal Position (APP) Sensor A (Throttle Position (TP) Sensor D) Circuit Low Voltage Input | ||||||||||
| P2123 (20) | - | Blinks | ON | Accelerator Pedal Position (APP) Sensor A (Throttle Position (TP) Sensor D) Circuit High Voltage Input | ||||||||||
| U0029 (107)(4) | - | OFF | OFF or ON(3) | F-CAN Malfunction (BUS-OFF) | ||||||||||
| U0029 (107) | - | OFF | OFF or ON(3) | F-CAN Malfunction (BUS-OFF) | ||||||||||
| U0038 (120)(4) | - | Blinks | ON | IMA-CAN Malfunction (BUS-OFF) | ||||||||||
| U0038 (120)(5) | - | Blinks | ON | IMA-CAN Malfunction (BUS-OFF) | ||||||||||
| U0121 (107)(4) | - | Blinks | OFF | F-CAN Malfunction (Powertrain Control Module (PCM)-ABS) | ||||||||||
| U0122 (107)(4) | - | Blinks | OFF | F-CAN Malfunction (Powertrain Control Module (PCM)-VSA) | ||||||||||
| U0122 (107)(5) | - | Blinks | OFF | F-CAN Malfunction (Powertrain Control Module (PCM)-VSA) | ||||||||||
| U0155 (107)(3)(4) | - | OFF | OFF or ON(3) | F-CAN Malfunction (Powertrain Control Module (PCM)-Gauge Control Module) | ||||||||||
| U0155 (107)(3) | - | OFF | OFF or ON(3) | F-CAN Malfunction (Powertrain Control Module (PCM)-Gauge Control Module) | ||||||||||
| U0301 (129)(4) | - | Blinks | ON | PGM-FI System and A/T System Program Version Mismatch | ||||||||||
| U0302 (129)(5) | - | Blinks | ON | PGM-FI System and A/T System Program Version Mismatch | ||||||||||
| U1205 (120)(4) | - | Blinks | ON | IMA-CAN Malfunction (Powertrain Control Module (PCM)-Motor Control Module (MCM)) | ||||||||||
| U1205 (120)(5) | - | Blinks | ON | IMA-CAN Malfunction (Powertrain Control Module (PCM)-Motor Control Module (MCM)) | ||||||||||
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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.