Reference meaning
What does this code mean?
The wording below belongs to the named make and communication. Match the complete code, reporting module, model year and engine before applying it.
A code identifies a detected condition, not a part that must automatically be replaced.
Narrow by vehicle
A listed vehicle is a research lead. Confirm the engine, production range and software in the manufacturer's information.
Before replacing a part
Record codes and freeze-frame data. Check battery condition, related codes and visible wiring or hose damage. Follow the vehicle's diagnostic procedure and test results before replacing parts.
Scan worksheet →Manufacturer wording
Source wording can vary by vehicle and suffix. It is shown as written, not as a universal diagnosis.
P205B-64Reductant Tank Temperature Sensor Circuit Range/Performance - Model Year 2018 and Newer
P205B-64Reductant Tank Temperature Sensor Circuit Range/Performance - Model Year 2018 and Newer
P205B64Reductant Tank Temperature Sensor Circuit Range/Performance - US17+OBD16 Emissions And Newer
Manufacturer communications
36Original wording in English
FORD
Some 2018-2021 F-150 vehicles equipped with a 3.0L diesel engine, 2016-2022 F-650/F-750 vehicles equipped with a 6.7L engine, and 2017-2022 F-Super Duty vehicles equipped with a 6.7L engine and built on or before 08-Mar-2022 may exhibit an illuminated malfunction indicator lamp (MIL) with diagnostic trouble codes (DTCs) P21DD, P…
FORD
Some 2018-2021 F-150 vehicles equipped with a 3.0L diesel engine, 2016-2022 F-650/F-750 vehicles equipped with a 6.7L engine, and 2017-2022 F-Super Duty vehicles equipped with a 6.7L engine and built on or before 08-Mar-2022 may exhibit an illuminated malfunction indicator lamp (MIL) with diagnostic trouble codes (DTCs) P21DD, P…
MACK
Mack Chassis - Diagnostic Trouble Code ( DTC ) P205B - US14+OBD15 Emissions, Common Model Year 2016
VOLVO
Volvo Chassis - ( DTC ) P205B Malfunction Indicator Lamp On ( MIL )
Check vehicle applicability
136A listed vehicle is a research lead. Confirm the engine, production range and software in the manufacturer's information.
| Make | Model | Model year |
|---|---|---|
| Cadillac | ESCALADE ↗ | 2022 |
| Cadillac | ESCALADE ESV ↗ | 2022 |
| Cadillac | ESCALADE ESV ↗ | 2021 |
| Cadillac | ESCALADE NA ↗ | 2021 |
| Chevrolet | SUBURBAN ↗ | 2022 |
| Chevrolet | SUBURBAN ↗ | 2021 |
| Chevrolet | TAHOE ↗ | 2022 |
| Chevrolet | TAHOE ↗ | 2021 |
Can I keep driving?
A code alone cannot establish whether driving is safe. A flashing malfunction light, severe shaking, overheating, oil-pressure warning or loss of braking or steering needs prompt attention. Stop in a safe place and seek assistance when control or engine safety is affected. Follow the vehicle handbook.