Codes
Year: 2005
Manufacturer: General Motors
Make: Cadillac
Model: Deville
Engine Type: V8, 4.6L
Transmission: Automatic
Trim Level: Base
Mileage: 87561
Error Code: P0174
Definition: Fuel Trim System Lean (Bank 2)
Conditions: DTC P0101-P0103, P0106-P0108, P0112-P0113, P0116-P0118, P0121-P0123, P0125, P0128, P0200, P0300, P0410-P0446, P0452-P0453, P1258, P1415-P1416 and P1441 not set, engine started, vehicle driven at less than 82 mph at 500-4000 rpm in closed loop, BARO sensor over 75 kPa, ECT sensor from 68-239ºF, IAT sensor from -4ºF to 212ºF, MAF sensor from 3-60 g/sec, EGR Flow Test "off", MAP sensor from 15-85 kPa, TP angle below 65%, and the PCM detected the LT fuel trim was more than +23 for 6 seconds during the test.
Possible Causes: Air leaks in intake manifold, exhaust pipes or exhaust
manifold Fuel control sensor is out of calibration (ECT, IAT or MAF)
Low fuel pressure (fuel filter clogged, pressure regulator failure)
One or more injectors restricted or pressure regulator has failed
HO2S element is contaminated, deteriorated or has failed
Vacuum hose is disconnected, broken, leaking or loose
Error Code: P0171
Definition: Fuel Trim System Lean (Bank 1
Conditions: DTC P0101, P0103, P0103, P0107, P0108, P0121, P0122, P0123, P0130-P0141, P0201-P0206, P0300, P0401-P0405, P0410, P0440-P0446, P0506, P0507, P1404 and P1441 not set, engine speed from 550-4000 rpm, ECT sensor from 68-230ºF, IAT sensor from 64-158ºF, MAF sensor at 2.8-150 gm/s, BARO sensor over 70 kPa, MAP sensor at 15-105 kPa, VSS under 82 mph, fuel level over 10%, and the PCM detected the Short Term fuel trim was more than 20% for 6 seconds.
Possible Causes: Air leaks in intake manifold, exhaust pipes or exhaust
manifold Fuel control sensor is out of calibration (ECT, IAT or MAF)
Fuel component fault (fuel filter, fuel injector, low fuel pressure)
HO2S element is contaminated, deteriorated or has failed
Error Code: P0300
Definition: Engine Misfire Detected
Conditions: DTC P0101-P0103, P0106-P0108, P0112-P0113, P0116-P0118, P0121-P0123, P0125, P0128, P0200, P0300, P0410-P0446, P0452-P0453, P1258, P1415-P1416 and P1441 not set, engine speed from 500-5850 rpm, ECT sensor from 19-248ºF, A/C Clutch and TP angle steady, EGR Test not active, DFCO and Torque Control "off", fuel level over 10%, and the PCM detected a crankshaft speed variation in two or more cylinders characteristic of a misfire condition. Note: If the misfire is severe, the MIL will flash on/off on the 1st trip!
Possible Causes: Base engine mechanical or fuel metering fault that affects one or more cylinders EGR valve is stuck open or the PCV system has a vacuum leak EVAP system problem or the EVAP canister is fuel saturated
Ignition system fault (a coil) that affects more than one cylinder
Freeze Frame Information:
1. DTC for which Freeze Frame was Stored - P0174.
2. Fuel System 1 Status - Closed Loop.
3. Fuel System 2 Status - Closed Loop.
4. Calculated LOAD Value - 20.00 %.
5. Engine Coolant Temp - 212.00 °F.
6. Short Term Fuel Trim - Bank 1 - 6.25 %.
7. Long Term Fuel Trim - Bank 1 - 24.22 %.
8. Short Term Fuel Trim - Bank 2 - 13.28 %.
9. Long Term Fuel Trim - Bank 2 - 24.22 %.
10. Intake Manifold Absolute Pressure - 10.07 Inhg.
11. Engine RPM - 644.00 Rpm.
12. Vehicle Speed Sensor - 0.00 Mph.
13. Ignition Timing Advance #1 Cylinder - 13.00 °.
14. Intake Air Temperature - 89.60 °F.
15. Air Flow Rate Mass Air Flow Sensor - 0.57 Lb/Min.
16. Absolute Throttle Position - 0.00 %.
17. Commanded Secondary Air Status - Atmosphere / Off.
Monitor Information:
1. MIL - ON.
2. Misfire Monitor - Complete.
3. Fuel System Monitor - Complete.
4. CCM Monitor - Complete.
5. Catalyst Monitor - Complete.
6. Heated Catalyst Monitor - Not Supported.
7. EVAP Monitor - Complete.
8. Secondary Air System Monitor - Complete.
9. O2 Sensor Monitor - Complete.
10. O2 Sensor Heater Monitor - Complete.
11. EGR Monitor - Complete.
12. NMHC Monitor - Not Supported.
13. Nox Adsorber Monitor - Not Supported.
14. Boost Pressure System Monitor - Not Supported.
15. Exhaust Gas Sensor Monitor - Not Supported.
16. PM Filter Monitor - Not Supported.
