P CODE FAMILY

Powertrain code references — Page 57.

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

Mercedes-Benz

P1630

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.

Drive Authorization Signal

Traction Control System

Accelerator Pedal Position Sensor 1 Signal Too Low

Theft Deterrent Start Enable Signal Not Correct

Alternator T Open Or No Power Output 1.8L

Generator Output Voltage Signal No Output

Accelerator Pedal Position Sensor 1 Signal Too High

Throttle Valve Adaptation Adaptation Condition Not Met

Theft Deterrent System Fuel Disabled

Battery Voltage Detection Circuit for Alternator Regulator 1.8L

Battery Voltage Detection Circuit for Alternator Regulator

Accelerator Pedal Position Sensor 1 Power Supply Malfunction

Throttle Valve Adaptation Limp Home Position

Ignition Supply Power Circuit Low Voltage

Battery Overcharge

ECM Malfunction ETCS Circuit

Battery Overcharge Fault

Accelerator Pedal Position Sensor 2 Signal Too Low

Throttle Valve Adaptation Spring Test Failed

Ignition 1 Power Circuit Low Voltage

Data Output Link Circuit Failure

Alternator B Open 1.8L

Generator Terminal B Circuit Open

Accelerator Pedal Position Sensor 2 Signal Too High

Throttle Valve Adaptation Lower Mechanical Stop Not Adapted

5 Volt Reference 1 Circuit

Tire Axle Ratio Out of Acceptable Range

Data Bus Powertrain Missing Message From Air Condition Control

Throttle Valve Control Circuit

PCM Stack Overrun

Inductive Signature Chip Communication Error

Data Bus Powertrain Missing Message From Airbag Control

Throttle Valve Position Control Control Deviation

Generator L-Terminal Circuit

CAN Link ECM ABS Control Module Circuit Network

Data Bus Powertrain Missing Message From Central Electronic Control

Throttle Valve Position Control Throttle Stuck Temporarily

Generator F-Terminal Circuit

CAN Link ECM INSTM Circuit Network

Data Bus Powertrain Missing Message From Clutch Control

Throttle Valve Position Control Throttle Stuck Permanently

5 Volt Reference 2 Circuit

Vehicle ID Block Corrupted or Not Programmed

Accelerator Pedal Position Sensor 1/2 Range Performance

Internal Control Module ROM RAM Error

Driver 1 Input High Voltage

Powertrain DTCs Available in Another Module

Internal Control Module EEPROM Error

FC Relay 1 Control Circuit

Fuel Pump Primary Circuit Failure

Fuel Pump Primary Circuit

Check DTC Memory Of Air Condition ECU

FC Relay 2 And 3 Control Circuit

Fuel Pump Monitor Circuit High Input

CAN Link Circuit

Check DTC Memory Of Airbag ECU

Engine Speed Output Circuit

Fuel Pump Monitor Circuit Low Input

CAN Link Engine Control Module Transmission Control Module Circuit Network

Check DTC Memory Of Central ECU

TP Output Circuit

Fuel Pump Speed Control Circuit Malfunction

Check DTC Memory Of Clutch ECU

EVAP Solenoid Output Circuit

Body ECU Malfunction

Fuel Pump Resistor Switch Circuit

Data Bus Powertrain Defect

Driver 1 Line 6

Linear O2 Sensor Control Chip Bank 1

Check DTC Memory Of All Wheel Drive ECU

Driver 1 Line 7

Linear O2 Sensor Control Chip Bank 2

Check Coding Of ECUs In Data Bus Powertrain

Knock Sensor Input Chip

Data Bus Powertrain Malfunction

Fuel Injection Pump Module

Data Bus Powertrain Missing Message From Brake Controller

Driver 2 Input High Voltage

Power Steering Pressure Switch Out of Self-Test Range

Power Steering Pressure Switch Out Of Range Fault