Volkswagen New Beetle. Manual - part 1930

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

  

DIAGNOSTIC TROUBLE CODE P1136 & P1137

DIAGNOSTIC TROUBLE CODE P1171 TO P1198 

SAE 
DTC

DTC text

Corrective action

P1136

"Long Term Fuel Trim 

Add. Fuel,Bank1 

System too Lean"

z

Check fuel pressure regulator and residual pressure, see FUEL 

PRESSURE REGULATOR AND RESIDUAL PRESSURE, 

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 

P1137

"Long Term Fuel Trim 

Add. Fuel,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

NOTE:

add = additive, means that malfunction is only valid at closed throttle (idle).

SAE 
DTC

DTC text

Corrective action

P1171

"Throttle Actuation 

Potentiometer Sign.2 

Range/Performance"

z

Check Throttle Valve Control Module -J338-, see 

THROTTLE VALVE CONTROL MODULE, 

CHECKING

P1172

"Throttle Actuation 

Potentiometer Sign.2 Signal 

too Low"

P1173

"Throttle Actuation 

Potentiometer Sign.2 Signal 

too High"

P1176

"O2 Correction Behind 

Catalyst,B1 Limit Attained"

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

 

2003 Volkswagen New Beetle GLS 

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

  

Fuel and air ratios 

DIAGNOSTIC TROUBLE CODE P1213 TO P1216 

DIAGNOSTIC TROUBLE CODE P1125 TO P1296 

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

P1198

"O2 Sensor Heater 

Circ.,Bank1 -Sensor2 

Electrical Malfunction"

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

SAE 
DTC

DTC text

Corrective action

P1213

"Cyl.1 -Fuel Inj. 

Circ. Short to B+"

z

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

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

P1214

"Cyl.2 -Fuel Inj. 

Circ. Short to B+"

P1215

"Cyl.3 -Fuel Inj. 

Circ. Short to B+"

P1216

"Cyl.4 -Fuel Inj. 

Circ. Short to B+"

SAE 
DTC

DTC text

Corrective action

P1225

"Cyl.1 -Fuel Inj. Circ. 

Short to Ground"

z

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

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

P1226

"Cyl.2 -Fuel Inj. Circ. 

Short to Ground"

P1227

"Cyl.3 -Fuel Inj. Circ. 

Short to Ground"

P1228

"Cyl.4 -Fuel Inj. Circ. 

Short to Ground"

P1237

"Cyl.1 -Fuel Inj. Circ. 

Open Circ."

P1238

"Cyl.2 -Fuel Inj. Circ. 

Open Circ."

P1239

"Cyl.3 -Fuel Inj. Circ. 

Open Circ."

P1240

"Cyl.4 -Fuel Inj. Circ. 

 

2003 Volkswagen New Beetle GLS 

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