P2031 to P2036, P2080 to P2087, P2428 and P2429: exhaust temperature sensors and overheating
An exhaust gas temperature sensor, sensor 1 or 2 on bank 1 or 2, has a circuit fault or reads out of range, or the exhaust gas on one bank is too hot (P2428, P2429).
SeverityModerateUsually not urgent today, but it can get worse if left.
Can you keep driving?Drive gently, check it soonWhat does P2031 mean?
Where P0544 to P0549 cover the first exhaust temperature sensors, these codes add the second sensor on each bank, often after the catalyst or before the particulate filter, and range checks for both. The computer compares the readings to watch regeneration and protect the catalyst and the turbo. P2428 and P2429 are the ones that matter most: exhaust that is too hot can damage the turbocharger, the catalyst or the particulate filter, and it often points to an engine fault such as a misfire or too much fuel.
What causes P2031?
- A failed exhaust temperature sensor
- A sensor wire damaged by heat along the exhaust
- A misfire or a leaking injector making the exhaust too hot
- A particulate filter regeneration that ran too hot or too long
- A connector corroded by road spray
What to check first for P2031
- Compare the readings of all exhaust temperature sensors with the engine cold
- Inspect the sensor wiring for heat damage
- With P2428 or P2429, read the misfire and injector codes as well
- Ask whether a regeneration was interrupted or run recently
Can you drive with P2031?
With only a sensor code, you can usually drive to a workshop. With P2428 or P2429, or a smell of heat from under the car, stop and let it cool, because an overheated exhaust can damage parts or set fire to dry grass underneath.
Clear a code only after the fault is fixed. A code that comes back means the cause is still there, and a warning light left on can hide a second fault behind the first.
Codes on this page
16
- P2031Exhaust Gas Temperature Sensor CircuitBank 1 Sensor 2
- P2032Exhaust Gas Temperature Sensor Circuit LowBank 1 Sensor 2
- P2033Exhaust Gas Temperature Sensor Circuit HighBank 1 Sensor 2
- P2034Exhaust Gas Temperature Sensor CircuitBank 2 Sensor 2
- P2035Exhaust Gas Temperature Sensor Circuit LowBank 2 Sensor 2
- P2036Exhaust Gas Temperature Sensor Circuit HighBank 2 Sensor 2
- P2080Exhaust Gas Temperature Sensor Circuit Range/PerformanceBank 1 Sensor 1
- P2081Exhaust Gas Temperature Sensor Circuit IntermittentBank 1 Sensor 1
- P2082Exhaust Gas Temperature Sensor Circuit Range/PerformanceBank 2 Sensor 1
- P2083Exhaust Gas Temperature Sensor Circuit IntermittentBank 2 Sensor 1
- P2084Exhaust Gas Temperature Sensor Circuit Range/PerformanceBank 1 Sensor 2
- P2085Exhaust Gas Temperature Sensor Circuit IntermittentBank 1 Sensor 2
- P2086Exhaust Gas Temperature Sensor Circuit Range/PerformanceBank 2 Sensor 2
- P2087Exhaust Gas Temperature Sensor Circuit IntermittentBank 2 Sensor 2
- P2428Exhaust Gas Temperature Too HighBank 1
- P2429Exhaust Gas Temperature Too HighBank 2
Related codes
Checked on · Rafael Soares
These are the generic meanings every manufacturer shares. Each brand adds its own detail, so your car's handbook, its service information and a qualified mechanic have the last word. OdoKeep has no connection with any manufacturer, and the app does not read codes from the car.
