2017 Cadillac ATS
Mileage
98,322
Service Date
4/29/2026
Services Performed
- FOUND: code p0365 exhaust camshaft position sensor circuit. Code p0556 brake booster pressure sensor performance. Inspected the exhaust camshaft position sensor. The housing appears to be broken and the sensor is loose from its mounting bolt. Recommend replace the exhaust camshaft position sensor and retest. There is no vacuum present at the brake vacuum booster. The vacuum comes from a pump on the back of the engine. There is no vacuum on the outlet Port of this pump. The pump will need to be removed for inspection. The pump and or the camshaft that drives it may be damaged. While attempting to remove the camshaft position sensor for replacement, it was discovered that pieces of the vacuum pump for the brake booster have broken and are inside the cylinder head. One of these pieces contacted the cam sensor and caused it to break. There may be damage to the camshaft or other components within the cylinder head.
- Courtesy Vehicle Inspection: Includes vehicle inspection – report to be sent via text on any visual observations & any Scheduled MFG recommendations.
- CAMSHAFT POSITION SENSOR – Remove & Replace – In-Line4 Exhaust
- VACUUM BRAKE BOOSTER PUMP – Remove & Replace – Electric Pump
- CAMSHAFT – Remove & Replace – In-Line4, Automatic Trans Both – [Includes: R&I Intake Manifold. Includes: R&I Wiper Link Assembly & Cowl Top Panel.] – [Includes: Replace Lifters and Valves (where applicable).]
ALBERT M. gave our service a 5 star review on 4/29/2026
