× Auto Repair Pros Member Benefits TechHelp Knowledge Base Forums Resources My iATN Marketplace Chat Pricing About Us Join Industry Sponsors Video Members Only Repair Shops Auto Pro Careers Auto Pro Reviews
Join Now
International Automotive Technicians Network
2008 Cadillac DTS 4.6L MIL Lamp on
Posted to GM Driveability on 2/16/2015 4 Replies

Have not found much diagnostic information on this code. Checked EGR for being partially stuck open but could blow from exhaust side and pintle sealing tightly/no air.

4 Replies Received (View Replies)

  Related Documents & Media  2008 Cadillac DTS

 
Message Closed w/FIX

car Vehicle Data

2008 Cadillac DTS

VIN 1G6KD57Y68
Engine4.6 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFuel Injection
EmissionsOBD-II Compliant
SymptomsMIL Lamp On
OccursCold

Trouble Codes

P1400Manifold Differential Pressure Sensor Circuit Malfunction
Message Closed w/FIX

car Vehicle Data

2008 Cadillac DTS

VIN 1G6KD57Y68
Engine4.6 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFuel Injection
EmissionsOBD-II Compliant
SymptomsMIL Lamp On
OccursCold

Trouble Codes

P1400Manifold Differential Pressure Sensor Circuit Malfunction