Volkswagen New Beetle. Manual - part 1964

Additional exhaust regulation 

DIAGNOSTIC TROUBLE CODE P0411 TO P0418 

DIAGNOSTIC TROUBLE CODE P0420 TO P0456 

High Bank 1 or Single Sensor

P0351

Ignition Coil "A" Primary/Secondary 

Circuit

z

Check ignition coils with power output stage, see 
IGNITION COILS WITH POWER OUTPUT 

STAGES, CHECKING

P0352

Ignition Coil "B" Primary/Secondary 

Circuit

P0353

Ignition Coil "C" Primary/Secondary 

Circuit

P0354

Ignition Coil "D" Primary/Secondary 

Circuit

SAE 
DTC

DTC text

Corrective action

P0411

Secondary Air Injection 

System Incorrect Flow 

Detected

z

Check Secondary Air Injection (AIR) Pump Motor -V101-

, see SECONDARY AIR INJECTION (AIR) PUMP 

MOTOR, CHECKING

z

Check Secondary Air Injection (AIR) Solenoid Valve -

N112-, see SECONDARY AIR INJECTION (AIR) 

VALVE, CHECKING

z

Check combination valve, see COMBINATION 

VALVE, CHECKING

z

Checking hoses and connecting pipes to and between 

components, see SECONDARY AIR INJECTION 

(AIR) SYSTEM

P0412

Secondary Air Injection 

System Switching Valve "A" 

Circuit

z

Check Secondary Air Injection (AIR) Solenoid Valve -

N112-, see SECONDARY AIR INJECTION (AIR) 

VALVE, CHECKING

P0413

Secondary Air Injection 

System Switching Valve "A" 

Circuit Open

P0414

Secondary Air Injection 

System Switching Valve "A" 

Circuit Shorted

P0418

Secondary Air Injection 

System Control "A" Circuit

z

Check activation of Secondary Air Injection (AIR) Pump 

Relay -J299-. 

SAE 
DTC

DTC text

Corrective action

P0420

Catalyst System 

Efficiency Below 

Threshold Bank 1

z

Check Oxygen Sensor (O2S) and oxygen sensor control before 

Three Way Catalytic Converter (TWC), see CHECK OXYGEN 

 

2003 Volkswagen New Beetle GLS 

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

  

Speed and idle control 

DIAGNOSTIC TROUBLE CODE P0501 TO P0507 

Control module and output signals 

DIAGNOSTIC TROUBLE CODE P0600 TO P0638 

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

P0441

Evaporative Emission 

System Incorrect Purge 

Flow

z

Check Evaporative Emission (EVAP) Canister Purge Regulator 

Valve -N80-, see EVAPORATIVE EMISSION (EVAP) 

CANISTER PURGE REGULATOR VALVE, CHECKING

z

EVAP canister system, check for proper seal, see EVAP 

CANISTER SYSTEM, CHECKING FOR PROPER SEAL

P0442

Evaporative Emission 

System Leak Detected 

(small leak)

P0444

Evaporative Emission 
System Purge Control 

Valve Circuit Open

P0445

Evaporative Emission 
System Purge Control 
Valve Circuit Shorted

P0455

Evaporative Emission 

System Leak Detected 

(large leak)

P0456

Evaporative Emission 

System Leak Detected 

(very small leak)

SAE 
DTC

DTC text

Corrective action

P0501

Vehicle Speed Sensor "A" 

Range/Performance

z

Check speed signal, see SPEED SIGNAL, 

CHECKING

P0506

Idle Air Control System RPM 

Lower Than Expected

z

Check Throttle Valve Control Module -J338-, see 

THROTTLE VALVE CONTROL MODULE, 

CHECKING

P0507

Idle Air Control System RPM 

Higher Than Expected

SAE 
DTC

DTC text

Corrective action

P0600

Serial Communication Link

z

Check terminal resistance for CAN-Bus, see 

TERMINAL RESISTANCE FOR CAN-BUS, 

 

2003 Volkswagen New Beetle GLS 

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

  

DIAGNOSTIC TROUBLE CODE P0685 TO P0687 

SAE P1xxx-DTCs 

Fuel and air ratios 

DIAGNOSTIC TROUBLE CODE P1102 & P1105 

CHECKING

P0601

Internal Control Module 

Memory Check Sum Error

z

Replace Motronic Engine Control Module (ECM) -J220-

, see REPLACING ENGINE CONTROL MODULE 

(ECM)

P0602

Control Module Programming 

Error

P0604

Internal Control Module 

Random Access Memory 

(RAM) Error

P0605

Internal Control Module Read 

Only Memory (ROM) Error

P0606

ECM/PCM Processor

P0638

Throttle Actuator Control 

Range/Performance Bank 1

z

Check Throttle Valve Control Module -J338-, see 

THROTTLE VALVE CONTROL MODULE, 

CHECKING

z

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

2- for accelerator pedal position -G185-, see 

THROTTLE POSITION (TP) SENSOR, 

CHECKING

SAE 
DTC

DTC text

Corrective action

P0685 ECM/PCM Power Relay 

Control Circuit /Open

z

Check voltage supply of Motronic Engine Control Module 

(ECM) -J220-, see VOLTAGE SUPPLY FOR ENGINE 

CONTROL MODULE (ECM), CHECKING

z

Check Activation of Motronic Engine Control Module (ECM) 

Power Supply Relay -J271- according to wiring diagram. 

P0686 ECM/PCM Power Relay 

Control Circuit Low

P0687 ECM/PCM Power Relay 

Control Circuit High

SAE 
DTC

DTC text

Corrective action

P1102

"O2 Sensor Heating 

Circ.,Bank1 - 

Sensor1 Short to B+"

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 

CATALYTIC CONVERTER (TWC), CHECKING

P1105

"O2 Sensor Heating 

Circ.,Bank1 - 

Sensor2 Short to B+"

z

Check oxygen sensor heater for Oxygen Sensor (O2S) behind 

Three Way Catalytic Converter (TWC), see OXYGEN SENSOR 

HEATER FOR OXYGEN SENSORS BEHIND THREE WAY 

CATALYTIC CONVERTER (TWC), CHECKING

 

2003 Volkswagen New Beetle GLS 

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

  

DIAGNOSTIC TROUBLE CODE P1115 TO P1127

DIAGNOSTIC TROUBLE CODE P1128 

SAE 
DTC

DTC text

Corrective action

P1115

"O2 Sensor Heater 

Circ.,Bank1 - Sensor1 

Short to Ground"

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 

CATALYTIC CONVERTER (TWC), CHECKING

P1116

"O2 Sensor Heater 

Circ.,Bank1 - Sensor1 

Open"

P1117

"O2 Sensor Heater 

Circ.,Bank1 - Sensor2 

Short to Ground"

z

Check oxygen sensor heater for Oxygen Sensor (O2S) behind 

Three Way Catalytic Converter (TWC), see OXYGEN SENSOR 

HEATER FOR OXYGEN SENSORS BEHIND THREE WAY 

CATALYTIC CONVERTER (TWC), CHECKING

P1118

"O2 Sensor Heater 

Circ.,Bank1 - Sensor2 

Open"

P1127

"Long Term Fuel 

Trim mult.,Bank1 

System too Rich"

z

Check fuel pressure regulator and residual pressure, see FUEL 

PRESSURE REGULATOR AND RESIDUAL PRESSURE, 

CHECKING

z

Check fuel injectors (Cylinder 1 Fuel Injector -N30- to Cylinder 4 

Fuel Injector -N33-), see FUEL INJECTORS, CHECKING

z

Check Evaporative Emission (EVAP) Canister Purge Regulator 

Valve -N80-, see EVAPORATIVE EMISSION (EVAP) 

CANISTER PURGE REGULATOR VALVE, CHECKING

SAE 
DTC

DTC text

Corrective action

P1128

"Long Term Fuel Trim 

mult.,Bank1 System too 

Lean"

z

Check fuel pressure regulator and residual pressure, see 

FUEL PRESSURE REGULATOR AND RESIDUAL 

PRESSURE, CHECKING

z

Check fuel injectors (Cylinder 1 Fuel Injector -N30- to 

Cylinder 4 Fuel Injector -N33-), see FUEL INJECTORS, 

CHECKING

z

Check intake air system for leaks (false air), see INTAKE 

SYSTEM FOR LEAKS (FALSE AIR), CHECKING

z

Check Fuel Pump (FP) -G6 -, see CHECK FUEL PUMP

z

Check exhaust system for proper seal, see EXHAUST 

SYSTEM COMPONENTS, REMOVING AND 

INSTALLING

z

Check Secondary Air Injection (AIR) system for proper seal, 

see CHECKING SECONDARY AIR SYSTEM FOR 

PROPER SEAL

z

Check vacuum lines for leaks 

 

2003 Volkswagen New Beetle GLS 

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