Volkswagen New Beetle. Manual - part 1988

DIAGNOSTIC TROUBLE CODE P1626 - P1634

DIAGNOSTIC TROUBLE CODE P1635-P1681 

SAE-
DTC

DTC text

Corrective action

P1626

Data-Bus Powertrain, 

Missing Message from 

TCM.

z

Check terminal resistance for CAN-Bus. See CHECKING 

TERMINAL RESISTANCE FOR CAN - BUS 

(VEHICLES WITH ENGINE CODE AVH, AZG, BDC) . 

P1630

Throttle Position (TP) 

sensor -G79- signal too 

small

z

Check Throttle Position (TP) Sensor -G79- and Sender -2- for 

accelerator pedal position -G185-. See THROTTLE 

POSITION (TP) SENSOR, CHECKING . 

P1631

Throttle Position (TP) 

Sensor -G79- signal too 

large

P1633

Sender -2- for accelerator 

pedal position -G185- 

signal too small

P1634

Sender -2- for accelerator 

pedal position -G185- 

signal too large

SAE-
DTC

DTC text

Corrective action

P1635

Data -Bus Powertrain, missing 

message from air condition control

z

Check terminal resistance for CAN-Bus. See 

CHECKING TERMINAL RESISTANCE FOR 

CAN - BUS (VEHICLES WITH ENGINE CODE 

AVH, AZG, BDC) . 

P1639

Throttle Position (TP) sensor -G79- 

and sender -2- for accelerator pedal 
position -G185-, implausible signal

z

Check Throttle Position (TP) Sensor -G79- and 

Sender -2- for accelerator pedal position -G185-. See 

THROTTLE POSITION (TP) SENSOR, 

CHECKING . 

P1640

Control module faulty

z

Replace Motronic Engine Control Module (ECM) -

J220-. See REPLACING ENGINE CONTROL 

MODULE (ECM) . 

P1648

Data Bus Powertrain, defect

z

Check terminal resistance for CAN-Bus. See 

CHECKING TERMINAL RESISTANCE FOR 

CAN - BUS (VEHICLES WITH ENGINE CODE 

AVH, AZG, BDC) . 

P1649

Powertrain CAN-bus missing 

message from ABS control module

P1650

Data Bus Powertrain, missing 

message from instrument panel 

ECM

P1681

Contr. Unit Programming, 

Programming not Finished

z

Replace Motronic Engine Control Module (ECM) -

J220-. See REPLACING ENGINE CONTROL 

MODULE (ECM) . 

 

2003 Volkswagen New Beetle GLS 

1998-2004 ENGINE PERFORMANCE On-Board Diagnostic (OBD), 2.0L Generic Scan Tool - New Beetle

  

DIAGNOSTIC TROUBLE CODE P1691-P1693

SAE P2xxx-DTCs 

Fuel and air mixture and additional emission regulations 

DIAGNOSTIC TROUBLE CODE P2096-P2097 

Fuel and air ratios 

DIAGNOSTIC TROUBLE CODE P2101-P2138 

SAE-
DTC

DTC text

Corrective action

P1691

Malfunction Indicator 

Lamp, Open

z

Check emissions Malfunction Indicator Lamp (MIL) -K83-. See 

MALFUNCTION INDICATOR LAMP (MIL) IN 

INSTRUMENT CLUSTER, CHECKING . 

P1692

Malfunction Indicator 

Lamp, Short to 

Ground

P1693

Malfunction Indicator 

Lamp, Short to B+

SAE-
DTC

DTC text

Corrective action

P2096 Post Catalyst Fuel 

Trim System Too 

Lean, Bank 1

z

Check Oxygen Sensor (O2S) and oxygen sensor control before Three 

Way Catalytic Converter (TWC). See CHECK OXYGEN SENSOR 

AND OXYGEN SENSOR REGULATION BEFORE 

CATALYTIC CONVERTER . 

z

Check Oxygen Sensor (O2S) and oxygen sensor control behind Three 

Way Catalytic Converter (TWC). See CHECK OXYGEN SENSOR 

AND OXYGEN SENSOR REGULATION BEHIND 

CATALYTIC CONVERTER . 

P2097 Post Catalyst Fuel 

Trim System Too 

Rich Bank 1

SAE-
DTC

DTC text

Corrective action

P2101

Throttle Actuator Control Motor 

Circuit Range/Performance

z

Check Throttle Valve Control Module -J338-. See 

THROTTLE VALVE CONTROL MODULE, 

CHECKING . 

P2106

Throttle Actuator Control 

System - Forced Limited Power

P2122

Throttle/Pedal Position 

Sensor/Switch "D" Circuit Low 

Input

z

Check Throttle Position (TP) Sensor -G79- and Sender 

-2- for accelerator pedal position -G185-. See 

THROTTLE POSITION (TP) SENSOR, 

CHECKING . 

P2123

Throttle/Pedal Position 

Sensor/Switch "D" Circuit High 

Input

P2127

Throttle/Pedal Position 

Sensor/Switch "E" Circuit Low 

 

2003 Volkswagen New Beetle GLS 

1998-2004 ENGINE PERFORMANCE On-Board Diagnostic (OBD), 2.0L Generic Scan Tool - New Beetle

  

DIAGNOSTIC TROUBLE CODE P2177-P2181 

DIAGNOSTIC TROUBLE CODE P2187-P2192 

Input

P2128

Throttle/Pedal Position 

Sensor/Switch "E" Circuit High 

Input

P2133

Throttle/Pedal Position 

Sensor/Switch "F" Circuit High 

Input

P2138

Throttle/Pedal Position 

Sensor/Switch "D" / "E" Voltage 

Correlation

SAE-
DTC

DTC text

Corrective action

P2177 System Too Lean 

Off Idle, Bank 1

z

Check Oxygen Sensor (O2S) and oxygen sensor control before Three 

Way Catalytic Converter (TWC). See CHECK OXYGEN SENSOR 

AND OXYGEN SENSOR REGULATION BEFORE 

CATALYTIC CONVERTER . 

z

Check Oxygen Sensor (O2S) and oxygen sensor control behind Three 

Way Catalytic Converter (TWC). See CHECK OXYGEN SENSOR 

AND OXYGEN SENSOR REGULATION BEHIND CATALYTIC 

CONVERTER . 

z

Check intake air system for leaks (false air). See INTAKE SYSTEM 

FOR LEAKS (FALSE AIR), CHECKING . 

P2178 System Too Rich 

Off Idle, Bank 1

P2181

Cooling System 

Performance

z

Check Engine Coolant Temperature (ECT) Sensor -G62-. See 
ENGINE COOLANT TEMPERATURE (ECT) SENSOR, 

CHECKING . 

z

Check thermostat: 

See COOLING SYSTEM COMPONENTS -ENGINE SIDE, 

REMOVING AND INSTALLING .

SAE-
DTC

DTC text

Corrective action

P2187

System Too 

Lean at Idle, 

Bank 1

z

Check Oxygen Sensor (O2S) and oxygen sensor control before Three 

Way Catalytic Converter (TWC). See CHECK OXYGEN SENSOR 

AND OXYGEN SENSOR REGULATION BEFORE CATALYTIC 

CONVERTER . 

z

Check Oxygen Sensor (O2S) and oxygen sensor control behind Three 

Way Catalytic Converter (TWC). See CHECK OXYGEN SENSOR 

AND OXYGEN SENSOR REGULATION BEHIND CATALYTIC 

CONVERTER . 

P2188

System Too 

Rich at Idle, 

Bank 1

P2191

System Too 

Lean at Higher 

Load, Bank 1

 

2003 Volkswagen New Beetle GLS 

1998-2004 ENGINE PERFORMANCE On-Board Diagnostic (OBD), 2.0L Generic Scan Tool - New Beetle

  

Fuel and air ratios 

DIAGNOSTIC TROUBLE CODE P2243-P2251 

Additional emissions regulation 

DIAGNOSTIC TROUBLE CODE P2400-P2404 

SAE P3xxx-DTCs 

Fuel and air ratios 

DIAGNOSTIC TROUBLE CODE P3211 

P2192

System Too 

Rich at Higher 

Load, Bank 1

z

Check intake air system for leaks (false air). See INTAKE SYSTEM 

FOR LEAKS (FALSE AIR), CHECKING . 

SAE-
DTC

DTC text

Corrective action

P2243

O2 Sensor Reference 

Voltage Circuit/Open, 

Bank 1 Sensor 1

z

Check Oxygen Sensor (O2S) and oxygen sensor control before 

Three Way Catalytic Converter (TWC). See CHECK 

OXYGEN SENSOR AND OXYGEN SENSOR 

REGULATION BEFORE CATALYTIC CONVERTER . 

P2251

O2 Sensor Negative 

Current Control 

Circuit/Open, Bank 1 

Sensor 1

SAE-
DTC

DTC text

Corrective action

P2400

Evaporative Emission System Leak 

Detection Pump Control Circuit/Open

z

Check Leak Detection Pump (LDP) -V144-. See 

CHECK LEAK DETECTION PUMP 

(LDP) . 

z

EVAP canister system, check for proper seal. 

See EVAP CANISTER SYSTEM, 

CHECKING FOR PROPER SEAL . 

P2401

Evaporative Emission System Leak 

Detection Pump Control Circuit Low

P2402

Evaporative Emission System Leak 

Detection Pump Control Circuit High

P2403

Evaporative Emission System Leak 

Detection Pump Sense Circuit/Open

P2404

Evaporative Emission System Leak 

Detection Pump Sense Circuit 

Range/Performance

SAE-
DTC

DTC text

Corrective action

P3211

Exhaust-bank 1 
sensor 1 Heater 

return connection

z

Check oxygen sensor heater for Oxygen Sensor (O2S) before Three 

Way Catalytic Converter (TWC). See OXYGEN SENSOR 

HEATER FOR OXYGEN SENSOR BEFORE THREE WAY 

 

2003 Volkswagen New Beetle GLS 

1998-2004 ENGINE PERFORMANCE On-Board Diagnostic (OBD), 2.0L Generic Scan Tool - New Beetle