Volkswagen New Beetle. Manual - part 1954

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

  

CATALYTIC CONVERTER (TWC), CHECKING . 

 

2003 Volkswagen New Beetle GLS 

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

  

1998-2004 ENGINE PERFORMANCE

On-Board Diagnostic (OBD), 1.8L Generic Scan Tool - New Beetle 

ST GENERAL SCAN TOOL 

GENERAL INFORMATION FOR ON BOARD DIAGNOSTIC (OBD) 

Characteristics of On Board Diagnostic (OBD) 

The Engine Control Module (Motronic Engine Control Module (ECM) -J220-) is equipped with DTC memory. 

If malfunctions occur at the exhaust relevant systems or components, they are stored in DTC memory with a 
description of the malfunction type. 

The Engine Control Module (ECM) differentiates between different DTCs after evaluating the information, see 
DIAGNOSTIC TROUBLE CODE (DTC) TABLES: 

The stored malfunctions can be checked with a standard diagnostic tester, see DIAGNOSTIC MODE 3: 
CHECK DTC MEMORY . 

When harness connectors are disconnected from the Engine Control Module (ECM) or the battery is 
disconnected, all adaptation values in the control module are erased. DTC memory content will remain intact 
however. If the engine is started after this, rough, uneven idle can result. In this case, the readiness code must be 
generated again, see READINESS CODE, GENERATING . 

The following work steps must be performed in the described sequence after the malfunction(s) have been 
repaired: 

1. - Check DTC memory, see DIAGNOSTIC MODE 3: CHECK DTC MEMORY .  

2. - Erase DTC memory, see DIAGNOSTIC MODE 4: RESET/ERASE DIAGNOSTIC DATA .  

3. - For completion, generate readiness code, see READINESS CODE, GENERATING .  

On Board Diagnostic (OBD), technical data 

Control module identification 

The control module version is displayed by selecting "Diagnostic mode 9: Vehicle information" under address 
word 33, see DIAGNOSTIC MODE 9: VEHICLE INFORMATION . 

Engine Control Module (ECM) equipment 

ENGINE CONTROL MODULE (ECM) EQUIPMENT DESCRIPTION 

Engine code

APH

AWP

AWV

System identification

Motronic ME7.5

Motronic ME7.5

Motronic ME7.5

 

2003 Volkswagen New Beetle GLS 

1998-2004 ENGINE PERFORMANCE On-Board Diagnostic (OBD), 1.8L Generic Scan Tool - New Beetle

  

 

2003 Volkswagen New Beetle GLS 

1998-2004 ENGINE PERFORMANCE On-Board Diagnostic (OBD), 1.8L Generic Scan Tool - New Beetle