Code result
P2C37
Cold Start Engine Coolant Pump Performance
High severity
What it means
During cold start, the engine coolant pump does not produce the expected flow. Pump aging combined with high cold viscosity, or pump-disable strategy malfunction.
Is it safe to drive?
No — stop driving
This code can put the vehicle into limp or reduced-power mode. Avoid extended driving and have the vehicle diagnosed promptly.
Most likely causes
Pump output degraded with age
highOne of the most commonly reported causes for this code — check this first.
Cold coolant viscosity too high
mediumA plausible cause — test and verify before replacing parts.
Related help
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