Vacuum-operated EGR valves use a vacuum solenoid to vary the vacuum and direct it, opening and closing the EGR. Some systems even have sensors that feed information to the onboard computer. Digital ...

Other P0400-P0408 codes may be set due to an inoperative EGR valve, sensor or possible wiring fault. These are likely quicker/easier to fix but may result in no EGR function.

Other P0400-P0408 codes may be set due to an inoperative EGR valve, sensor or possible wiring fault. These are likely quicker/easier to fix but may result in no EGR function.

Perhaps it was a P0401 (insufficient EGR flow)? ... Other P0400-P0408 codes may be set due to an inoperative EGR valve, sensor or possible wiring fault.

Perhaps it was a P0401 (insufficient EGR flow)? ... Other P0400-P0408 codes may be set due to an inoperative EGR valve, sensor or possible wiring fault.

Perhaps it was a P0401, insufficient EGR flow. ... Other P0400-P0408 codes may be set because of an inoperative EGR valve, sensor or possible wiring fault.

Q: I took my car to my mechanic for the check engine light being on. He checked the codes and said it’s an “EGR fault” He said it would be a couple of days before he could get to it. He said ...

Question: I took my car to my mechanic, because the check-engine light was on. He checked the codes and said it’s an “EGR fault” He said it would be a couple of days before he could get to it.

Question: I took my car to my mechanic, because the check-engine light was on. He checked the codes and said it’s an “EGR fault” He said it would be a couple of days before he could get to it.

Q: I took my car to my mechanic for the check engine light being on. He checked the codes and said it’s an “EGR fault” He said it would be a couple of days before he could get to it. He said ...

Q: I took my car to my mechanic for the check engine light being on. He checked the codes and said it’s an “EGR fault” He said it would be a couple of days before he could get to it. He said ...

Question: I took my car to my mechanic, because the check-engine light was on. He checked the codes and said it’s an “EGR fault” He said it would be a couple of days before he could get to it.