OBD-II code · Powertrain (generic)
P0487 EGR Throttle Control Circuit A/Open
The drive circuit of EGR throttle A is open. EGR throttles partially close intake to increase exhaust gas recirculation flow at low loads.
Is it safe to drive with P0487?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelyActuator winding open
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
- Best left to a mechanic
- Typical labour
- 0.7–3 h
- Emissions test
- Likely to fail
- Parts involved
- Egr Throttle A
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.