The P2141: Exhaust Gas Recirculation (EGR) Throttle Control Circuit ‘A’ Low indicates a low voltage condition in the EGR throttle control circuit ‘A’. This can result from a faulty EGR throttle control, wiring issues, or other electrical faults, affecting the proper operation of the EGR system and vehicle emissions.
P2141 – Quick Overview
Code | Information |
---|---|
Meaning | P2141: Exhaust Gas Recirculation Throttle Control Circuit ‘A’ Low |
Is it serious? | Yes, it can lead to improper EGR operation, resulting in drivability issues and increased emissions. |
Possible causes | – Low voltage in the EGR throttle control circuit ‘A’ – Faulty EGR throttle control – Wiring issues |
How to diagnose? | – Measure voltage in the EGR throttle control circuit ‘A’ – Test the EGR throttle control – Inspect wiring and connections |
P2141 Meaning
The P2141 code signifies that the EGR throttle control circuit ‘A’ is experiencing lower-than-expected voltage. This can disrupt the flow of exhaust gases into the engine, causing improper combustion, higher emissions, and potential engine performance issues. The fault could be due to a malfunctioning EGR throttle control, wiring issues, or electrical problems.
Step-by-step diagnostic guide
Action | Description | Tools Needed |
---|---|---|
Check for Other Codes | Use an OBD-II scanner to check for any additional codes that may provide more context for the EGR system’s fault. | OBD-II Scanner |
Measure Voltage in the Circuit | Use a multimeter to measure the voltage in the EGR throttle control circuit ‘A’. Compare the readings to manufacturer specifications to determine if the voltage is too low. | Multimeter |
Test the EGR Throttle Control | Use a diagnostic tool to test the EGR throttle control for proper operation and ensure it is functioning within its expected range. Replace the component if necessary. | Diagnostic Tool |
Inspect Wiring and Connections | Visually inspect the wiring and connectors leading to the EGR throttle control ‘A’ for signs of damage, loose connections, or corrosion. Repair or replace as needed. | Flashlight, Multimeter |
Check for Shorts or Open Circuits | Perform continuity tests on the wiring to check for shorts, open circuits, or any faults that could cause low voltage in the circuit. | Multimeter, Wiring Diagram |
Clear the Code and Test Drive | After repairs or adjustments, clear the code using an OBD-II scanner and take the vehicle for a test drive to confirm the issue is resolved. | OBD-II Scanner |
Recheck for Codes | After the test drive, re-scan the vehicle to ensure that the P2141 code has not returned. | OBD-II Scanner |

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Hi, I am Juraj “Yuri” Lukacko. I got frustrated by unhelpful and scammy mechanics, so I decided to learn everything about car diagnostics myself. I test dozens of new car diagnostic tools every month along with learning new strategies to fix and customize cars. About Juraj Lukacko (Yuri)