GMC Terrain Fault Codes
You can find common GMC Terrain fault codes on this page that when clicked take you to a detailed description.
You can also type in the fault code you are getting below to find a more detailed description.
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GMC Terrain Recalls
When a car manufacturer detects a problem with a model they put out a recall notice and more often than not offer to fix the problem free of charge.
You can check to see if your GMC Terrain has any recall notices on our sister site AutoRecalls.co, sorted by model year.View GMC Terrain Recalls »
Common Terrain Fault Codes
These are the most common Terrain fault codes that people are searching for.
Intake Camshaft Position Timing - Over-Advanced (Bank 1)Learn More Fixes
Exhaust Camshaft Position Timing - Over-Advanced (Bank 1)Learn More Fixes
Crankshaft Position Camshaft Position Correlation Bank 1 Sensor BLearn More Fixes
Crankshaft Position Camshaft Position Correlation Bank 1 Sensor ALearn More Fixes
Catalyst System Efficiency Below Threshold (Bank 1)Learn More Fixes
Evaporative Emission System High Purge FlowLearn More Fixes
System Too Lean (Bank 1)Learn More Fixes
Secondary Air Injection System Incorrect Flow DetectedLearn More Fixes
Evaporative Emission Control System Leak DetectedLearn More Fixes
System Too Rich (Bank 1)Learn More Fixes
Cold Start Rough IdleLearn More
Evaporative Emission Control System Vent Control Circuit MalfunctionLearn More Fixes
Fuel Pump A Low Flow/PerformanceLearn More
Active Grille Air Shutter PerformanceLearn More
Heated Oxygen Sensor (H02S) Heater Control Circuit Bank 1 Sensor 1Learn More Fixes
Intake Camshaft Position Actuator Circuit / Open (Bank 1)Learn More Fixes
Fuel Rail Pressure Sensor Circuit Range/PerformanceLearn More Fixes
Exhaust Camshaft Position Actuator Circuit / Open (Bank 1)Learn More Fixes
System Gross Leak Evaporative EmissionLearn More Fixes
Turbo / Super Charger UnderboostLearn More Fixes
System Too Rich (Bank 2)Learn More Fixes
O2 Sensor Circuit High Voltage (Bank 1 Sensor 2)Learn More Fixes
Engine Oil Pressure Sensor/Switch Circuit MalfunctionLearn More
Evaporative Emission Control System Incorrect Purge flowLearn More Fixes
Evaporative Emission Control System Purge Control Valve circuit MalfunctionLearn More
Fuel Pressure Regulator PerformanceLearn More Fixes
Post Catalyst Fuel Trim System Too Rich Bank 1Learn More Fixes
Single Cylinder Misfire (Cylinder not Specified)Learn More
Transmission Control System MalfunctionLearn More Fixes
Pressure Control Solenoid B Performance or Stuck offLearn More Fixes
Transmission Fluid Pressure Sensor/Switch E Circuit LowLearn More
Intake Air Temperature Sensor 2 Circuit Low InputLearn More
Manifold Absolute Pressure/Barometric Pressure Circuit Range/Performance ProblemLearn More Fixes
Fuel Pump Control Module Requested MIL IlluminationLearn More
A/T FI Signal A High InputLearn More
MAF Sensor Out Of Self Test Range./KOER Not Able To Complete KOER AbortedLearn More
HO2S Insufficient Switching Sensor 1Learn More
Post Catalyst Fuel Trim System Too Lean Bank 1Learn More Fixes
Bank 1 Air/Fuel Ratio ImbalanceLearn More Fixes
Throttle/Pedal Position Sensor/Switch A / B Voltage CorrelationLearn More Fixes
Pedal Correlation PDS1 and PDS2Learn More
Transmission Component Slipping/ Transmission Mechanical Transfer Case 4x4 Switch Circuit FailureLearn More
Random/Multiple Cylinder Misfire DetectedLearn More Fixes
SCR NOx Catalyst Efficiency Below ThresholdLearn More
Post Catalyst Fuel Trim System Too Rich Bank 2Learn More Fixes
IMRC Input Error (Bank 1)Learn More
Engine Position System Performance - Bank 1Learn More
Cylinder 5 Misfire DetectedLearn More Fixes
EBCM Motor Relay Circuit Low When On (Chevrolet)Learn More
Coolant Thermostat (Coolant Temp Below Thermostat Regulating Temperature)Learn More Fixes
Evaporative Emission Control System Vent Valve/Solenoid Circuit MalfunctionLearn More Fixes
Lost Communication with TCMLearn More
Lost Communication With Body Control ModuleLearn More
SCP (J1850) Invalid or Missing Data for Primary IdLearn More
Control Module Communication Bus "A" OffLearn More Fixes
Lost Communication With Fuel Pump Control ModuleLearn More
Lost Communication With ECM/PCM "A"Learn More Fixes
SGC (Cam Position) Sensor Circuit Malfunction/ Crankshaft Position - Camshaft Position CorrelationLearn More
Cam Control FaultLearn More
Intake Camshaft Position Timing - Over-Retarded (Bank 1)Learn More Fixes
Heated Oxygen Sensor (HO2S) Heater Control Circuit Bank 1 Sensor 2Learn More Fixes
Mass or Volume Air Flow Circuit Low Voltage InputLearn More Fixes
Intake Air Temperature Circuit High InputLearn More Fixes
O2 Sensor Circuit Low Voltage (Bank 1 Sensor 1)Learn More Fixes
O2 Sensor Circuit No Activity Detected (Bank 1 Sensor 1)Learn More Fixes
O2 Sensor Heater Circuit Malfunction (Bank 1 Sensor 1)Learn More Fixes
O2 Sensor Circuit Low Voltage (Bank 1 Sensor 2)Learn More Fixes
O2 Sensor Heater Circuit Malfunction (Bank 1 Sensor 2)Learn More Fixes
Cylinder 1 Misfire DetectedLearn More Fixes
Cylinder 2 Misfire DetectedLearn More Fixes
Cylinder 3 Misfire DetectedLearn More Fixes
Cylinder 4 Misfire DetectedLearn More Fixes
Cylinder 6 Misfire DetectedLearn More Fixes
Knock Sensor 1 Circuit (Bank 2 or Single Sensor)Learn More Fixes
Knock Sensor 2 Circuit Low Input (Bank 2)Learn More Fixes
- Manufacturer: GMC
About the Terrain
The Terrain crossover SUV first made its debut in 2009. Since its release, only two generations have hit the markets. The second was released in 2018 and received an update in both 2021 and 2022.
The model is currently the smallest offering in GMC’s SUV lineup. This puts it just below the GMC Acadia. It also shares the same platform as its Chevrolet counterpart, the Chevy Equinox.
Competition in the crossover class has been fierce for a while now due to increasing popularity. This means the Terrain has faced rivals like the Honda CR-V, Mazda CX-50, and Volkswagen Tiguan.
During its time on the market, owners have reported a number of shaft issues to plague the Terrain. P0011 is one of the most common of these. This code indicates that the intake camshaft is over-advanced.
Similarly, fault code P0014 is another common issue for the Terrain. This is the same code but for the exhaust camshaft.
These can typically be the result of failing VVT valves. Another common cause is a faulty camshaft position sensor for the respective shafts. Despite being a serious issue, its common fixes for it are relatively simple and affordable.
Adding to these issues, fault codes P0016 and P0017 have also been reported to be common issues.
These codes indicate that the signals from the intake and exhaust camshafts respectively are not correlating with the crankshaft signal.
All of these codes are very serious as they can lead to significant damage if left unchecked. Terrain owners should always tackle the first codes before attempting to solve the latter issues as resolving codes like P0011 can fix the other problems.