Code result
C0870
Adaptive Cruise Control Brake Request Performance
Moderate severity
What it means
A brake request from adaptive cruise control or AEB cannot be executed within the expected response time.
Is it safe to drive?
Use caution
The vehicle is usually drivable for short distances, but the problem can worsen or affect emissions. Diagnose and repair as soon as practical.
Most likely causes
Bus communication latency
highOne of the most commonly reported causes for this code — check this first.
Hydraulic block slow to build pressure
mediumA plausible cause — test and verify before replacing parts.
Related help
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