P CODE FAMILY

Powertrain code references — Page 58.

Engine, transmission and powertrain diagnostic references. Exact vehicle and module context still matters.

Automatic Transmission System Malfunction

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OCV Circuit Malfunction Bank 1

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OCV Circuit

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A/C Clutch Relays Circuit Short To Ground

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Buick / Cadillac +4

1-4 Upshift Solenoid Control Circuit

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Ford / Lincoln +1

CAN Link Chip Malfunction

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A/C Clutch Relays Circuit Short To B+

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Buick / Cadillac +4

Starter Enable Relay Control Circuit

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Wastegate Valve Control Circuit

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Data Bus Powertrain Range Performance From Distance Control

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Buick / Cadillac +4

Cooling Fans Control Circuit

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Ford / Lincoln +1

Output Circuit Check Signal High

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A/T FI Data Line Failure

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Power Stage Group 'B'

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Buick / Cadillac +4

MIL Control Circuit

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Ford / Lincoln +1

Output Circuit Check Signal Low

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EGR Circuit

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Buick / Cadillac +4

Cruise Control Inhibit Control Circuit

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Ford / Lincoln +1

IDM_EN Circuit Failure

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EGR Bypass Valve Control Circuit

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Buick / Cadillac +4

Oil Life Lamp Control Circuit

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Ford / Lincoln +1

Fuel Demand Command Signal Circuit Malfunction

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OCV Circuit Malfunction Bank 2

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Buick / Cadillac +4

1-4 Upshift Lamp Control Circuit

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Buick / Cadillac +4

Driver 3 Line 5

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Power Stage Group 'A'

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Buick / Cadillac +4

Driver 3 Line 6

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Buick / Cadillac +4

Reverse Inhibit Solenoid Control Circuit

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Ford / Lincoln +1

CI Circuit Malfunction

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Ford / Lincoln +1

PCM IDM Communications Error

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Buick / Cadillac +4

ABS Unit Expected

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Ford / Lincoln +1

Electronic Feedback Signal Not Detected

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Buick / Cadillac +4

Driver 4 Line 1

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A/T FI Data Line No Signal

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Buick / Cadillac +4

Low Engine Oil Level Lamp Control Circuit

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A/T FI Data Line Failure

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Buick / Cadillac +4

Engine Hot Lamp Control Circuit

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Buick / Cadillac +4

Tachometer Control Circuit

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Buick / Cadillac +4

EVAP Vent Solenoid Control Circuit

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Buick / Cadillac +4

Driver 4 Line 6

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Traction Control System FI Data Line No Signal

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Drive By Wire MIL Circuit Electrical Malfunction

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Buick / Cadillac +4

Driver 4 Line 7

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Traction Control System FI Data Line Failure

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Drive By Wire MIL Circuit Short To B+

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FPTDR Signal Line Failure

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Drive By Wire MIL Circuit Short To Ground

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Drive By Wire MIL Circuit Open Circuit

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Chrysler / Dodge +3

Clutch Released Switch Circuit Open Or Shorted

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Metering Oil Pump Failure

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Buick / Cadillac +4

Driver 5 Line 1

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A/T FI Signal A Low Input

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Chrysler / Dodge +3

No Instrument Panel Cluster CCD/J1850 Messages Received

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Control Module Programming Not Finished

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Buick / Cadillac +4

Driver 5 Line 2

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A/T FI Signal A High Input

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Chrysler / Dodge +3

Charging System Voltage Too Low

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Metering Oil Pump Failure

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Buick / Cadillac +4

Driver 5 Line 3

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Chrysler / Dodge +3

Speed Control Power Relay Or Speed Control 12 Volt Driver Circuit Open Or Shorted

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Metering Oil Pump Temperature Sensor Circuit

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Buick / Cadillac +4

Driver 5 Line 4

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Chrysler / Dodge +3

Battery Disconnected Within Last 50 Starts

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Metering Oil Pump Position Sensor Circuit

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Control Unit Programming Communication Error

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Buick / Cadillac +4

Driver 5 Line 5

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Chrysler / Dodge +3

Skim Invalid Key

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Metering Oil Pump Stepping Motor Cont Circuit

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Buick / Cadillac +4

Driver 5 Line 6

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A/T FI Signal B Low Input

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Chrysler / Dodge +3

No SKIM Bus Message Received

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Metering Oil Pump Stepping Motor Cont Circuit

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Control Unit Error Programming

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Buick / Cadillac +4

Driver 5 Line 7

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A/T FI Signal B High Input

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Chrysler / Dodge +3

No Cluster Bus Message

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Metering Oil Pump Stepping Motor Cont Circuit

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Chrysler / Dodge +3

Internal Fuel Injection Pump Controller Failure

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Metering Oil Pump Stepping Motor Cont Circuit

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Buick / Cadillac +4

Delivered Torque Circuit Fault

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Chrysler / Dodge +3

No Communication Between ECM & Injection Pump Module

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Oil Pressure Control Solenoid Circuit

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Malfunction Indicator Lamp MIL Electrical

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Buick / Cadillac +4

ECM Loop Overrun

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Ford / Lincoln +1

Wastegate Solenoid Circuit Malfunction

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Traction Control System STB Line Failure

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Chrysler / Dodge +3

Fuel Injection Pump CKP Sensor Does Not Agree With ECM CKP Sensor

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Wastegate Solenoid Circuit

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MIL Malfunction

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Buick / Cadillac +3

Coolant Gage Circuit Low Voltage

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Chrysler / Dodge +3

Fuel Injection Pump Controller Calibration Failure

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Turbo Pressure Control Solenoid Circuit

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Coolant Gauge Circuit Low Voltage

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MIL Open Circuit

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Buick / Cadillac +3

Coolant Gage Circuit High Voltage

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Turbo Control Solenoid Circuit

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Coolant Gauge Circuit High Voltage

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MIL Short To Ground

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Buick / Cadillac +4

Tachometer Circuit Low Voltage

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Chrysler / Dodge +3

DTC Detected In ECM Or PCM

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These are code references, not a list of confirmed faults on every vehicle. Read the source and applicability notes, then match the exact vehicle, year, engine and scan report.