Exhaust Gas Recirculation System Valve 3
Table of contents
P1405 BUICK Possible Causes
- Faulty EGR Solenoid Valve
- EGR Solenoid Valve harness is open or shorted
- EGR Solenoid Valve circuit poor electrical connection
How do I fix code P1405 BUICK?
Check the “Possible Causes” listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector’s pins.
Cost of diagnosing the P1405 BUICK code
The cost of diagnosing the P1405 BUICK code is 1.0 hour of labor. The auto repair labor rates vary by location, your vehicle’s make and model, and even your engine type. Most auto repairs shops charge between $75 and $150 per hour.
Possible Symptoms
- Engine Light ON (or Service Engine Soon Warning Light)
P1405 BUICK Description
With the Engine Coolant Temperature (ECT) over 183°F, gear selector in 1st or 2nd gear, vehicle in coast-down mode, HO2S-11 signal over 566 mv, VSS over 20 mph, A/C Clutch on, engine speed at 1000-1488 rpm, then the Powertrain Control Module (PCM) detected that engine rpm did not drop 4 out of 5 times in the test