457A — Exhaust gas temperature sensor upstream of CAT Temperature too high
Severity: Warning
Can you drive? With caution: limp mode possible, have it checked soon
Make: BMW
| Meaning | Exhaust gas temperature sensor upstream of CAT Temperature too high. |
| Family | Manufacturer-native code |
Frequently asked questions
What does code 457A mean?
Exhaust gas temperature sensor upstream of CAT Temperature too high. Exhaust gas temperature sensor upstream of CAT Temperature too high.
Can I keep driving with code 457A active?
With caution: limp mode possible, have it checked soon
How do you fix code 457A?
Diagnosis starts from reading the live ECU parameters: the code points to the fault area, not to the part to replace. A vehicle-electronics specialist can test the component and clear the code after the repair.
Need help with this fault?
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Where to get it fixed
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