OBD-II code · Powertrain (generic)
P045F EGR B Control Stuck Closed
EGR B Control Stuck Closed: the control module has detected this fault condition. Without valid EGR feedback the ECU disables exhaust gas recirculation and may set further EGR codes.
Is it safe to drive with P045F?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelyCarbon buildup holds valve closed
- Less likelyCarbon or debris buildup preventing free movement
- Less likelyComponent wear with age - mechanical play
Symptoms
- Check engine light on
- Pinging or knocking under load
- Power loss and hesitation
- Possible rough idle
- Failed emissions inspection (NOx)
Repair at a glance
- Difficulty
- Medium
- DIY friendly
- Often, with basic tools
- Typical labour
- 0.7–3 h
- Emissions test
- Likely to fail
- Parts involved
- Egr Valve
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.