P2141
EGR Throttle Control Circuit A Low
EGR / emissions
Generic OBD-II
Medium
What it means
P2141 means the ECM detects low voltage (or a short to ground) in the control circuit for the EGR throttle — an intake throttle that helps drive exhaust-gas recirculation, common on diesels. It's mainly an emissions fault. Typical causes are wiring shorts, a failed EGR throttle actuator, or carbon restricting the EGR path.
Medium
Can I keep driving? You can usually keep driving, but expect possible hesitation or pinging under load; fix it to protect emissions and avoid long-term engine strain.
Common symptoms
What you'll notice
- Check-engine light on
- Possible pinging or knock under load or at higher speeds
- Slight power loss or hesitation
- Failed emissions test
Common causes
Most likely first
- Short to ground or low voltage in the EGR throttle control circuit wiringLikely
- Faulty EGR throttle actuator or valveCommon
- Carbon buildup restricting the EGR throttle and passagesCommon
- Poor or corroded connector at the actuatorLess often
- PCM fault (rare)Less often
How to diagnose & fix
Work through it in order
- Read freeze-frame data, then inspect the EGR throttle actuator connector and control wiring for shorts or low voltage.
- Clean carbon from the EGR throttle, tube, and passages before replacing parts.
- Test the actuator's resistance and operation per the service data.
- Repair the wiring or replace the actuator as indicated.
- Clear the code and retest.
FAQ
Quick answers
Is it safe to drive with P2141?+
Usually yes for short periods. It's mainly an emissions fault, though pinging under load can strain the engine over time, so don't put off the repair.
Can I just clear P2141?+
You can, but it will return if the circuit fault, actuator, or carbon restriction isn't addressed.
Related codes
Often seen with P2141
Read & clear P2141 yourself
Scan your car, confirm the code, and clear it once it's fixed — with OBD DashX on your phone.
✓ Verified name — SAE J2012 / ISO 15031-6Guidance reviewed by OBD DashX