Powertrain
Definition only
Lights the check engine lamp
P245A: EGR Cooler Bypass Control Circuit Open Bank 1
Standardized SAE J2012 code · P24xx — Auxiliary emission controls
What does P245A mean?
The EGR cooler bypass valve on bank 1 - routes EGR around the cooler during cold-start to keep cabin and engine warm-up fast - has an open control circuit.
The code tells you which monitor failed, not which part is broken. Test before replacing parts.
Symptoms
- Check engine light on
- Pinging or knocking under load
- Power loss and hesitation
- Possible rough idle
- Failed emissions inspection (NOx)
Common causes
- High Open in valve or wiring
- Low Pin pushed back out of connector body
- Low Cracked solder joint inside the module or sensor
Likelihood is a general estimate across vehicles; your make and model may differ.
Add your car to see reports of P245A on the same make and model first.
P245A in the community
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