Volkswagen New Beetle. Manual - part 1982

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End diagnosis and switch ignition off.  

READINESS CODE 

Function 

The readiness code is an 8 digit number block that indicates the status of emission relevant diagnostics. 

When the diagnostic for a system (e.g.: secondary air system) has run through successfully, the respective digit 
of the number block is set from 1 to 0. 

Diagnostics are performed at regular intervals during normal vehicle operation. After repairing an emissions 
relevant system, the readiness code should be generated via a road test to ensure that these systems are working 
according to specifications. If a malfunction is recognized during diagnostic, it is stored in DTC memory. 

The readiness code is erased every time DTC memory is erased or when voltage supply is interrupted. DTC 
memory should therefore only be erased when there are DTCs stored. 

Read readiness code 

Requirements 

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There must not be any DTCs stored in DTC memory. See DIAGNOSTIC MODE 3: CHECK DTC 
MEMORY .  

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Coolant temperature must be at least 80° C DIAGNOSTIC MODE 1: CHECK MEASURED 
VALUES .  

Work procedure 

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Connect diagnostic tester. See CONNECT DIAGNOSTIC TESTER .  

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Start engine and let run at idle.  

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Under address word 33, select "Diagnostic mode 1: Checking measured values."  

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select desired measuring value "PID 01".  

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Observe the right 8-digit number block:  

If all diagnoses have run through successfully, the 8-digit number block Specified value: "00000000" must be 
displayed. 

Evaluation PID 01: System status-information (right 8-digit number block:) 

EVALUATION PID 01: SYSTEM STATUS-INFORMATION 

Meaning if display position = 0
1

2 3 4 5 6 7 8

Diagnostic function

0

 

 

 

 

 

 

 

Exhaust gas recirculation OK 

 

2003 Volkswagen New Beetle GLS 

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

  

If a 1 is displayed instead of a 0 in the 8-digit number block: 

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Generate readiness code. See READINESS CODE, GENERATING .  

Readiness code, generating 

Requirements 

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The respective fuses of the Motronic fuel injection and ignition system must be OK: 

Fig. 14: Identifying Fuses 
Courtesy of VOLKSWAGEN OF AMERICA, INC. 

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Battery voltage must be at least 11.5 volts. 

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not available/always "0" 

 

0  

 

 

 

 

 

Oxygen sensor heater OK

 

  0  

 

 

 

 

Oxygen sensors OK

 

 

  0  

 

 

 

A/C system OK 

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not available/always "0" 

 

 

 

  0  

 

 

Secondary Air Injection (AIR) system OK

 

 

 

 

  0  

 

EVAP canister system (tank ventilation system) OK

 

 

 

 

 

  0  

Catalytic converter heater OK 

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not available/always "0" 

 

 

 

 

 

 

  0

Catalytic converter OK

NOTE:

Fuse holder is located behind access panel at far left end of dash.

 

2003 Volkswagen New Beetle GLS 

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

  

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All electrical consumers such as, for example, lights and rear window defroster must be switched off.  

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If vehicle is equipped with an A/C system, it must be switched off.  

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Ground (GND) connections between engine and chassis must be OK.  

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There must not be any DTCs stored in DTC memory. See Diagnostic mode 3: Check DTC Memory .  

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Intake air temperature 5 to 35° C. See DIAGNOSTIC MODE 1: CHECK MEASURED VALUES .  

Work procedure 

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Connect diagnostic tester. See CONNECT DIAGNOSTIC TESTER .  

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Perform a road test.  

The following operating condition must be met during this road test: 

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Coolant temperature must reach at least 80 °C. See DIAGNOSTIC MODE 1: CHECK MEASURED 
VALUES .  

Observe the safety precautions that apply to road tests. See SAFETY PRECAUTIONS . 

Let vehicle cool off with the ignition switched off until the following condition is met: 

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Coolant temperature approx. intake air temperature (5 to 35° C). See DIAGNOSTIC MODE 1: 
CHECK MEASURED VALUES .  

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Perform a road test anew.  

The following operating conditions must be met during this road test: 

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Accelerate vehicle uniformly, not at Wide Open Throttle (WOT).  

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Drive for 10 minutes in the highest gear or in the highest driving mode on a level driving surface at a 
constant speed in the range of 65 to 80 km/h at an engine speed of 2000 to 2500 RPM.  

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After 10 minutes, downshift until an engine speed of 2800 to 3500 RPM has been reached.  

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Drive in deceleration mode at a speed up to approx. 1800 RPM.  

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Park vehicle and let engine run at idle for 3 minutes.  

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Accelerator pedal must not be operated during this time.  

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Perform a road test anew.  

The following operating conditions must be met during this road test:

NOTE:

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Vehicle speed. See DIAGNOSTIC MODE 1: CHECK MEASURED VALUES . 

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Engine speed. See DIAGNOSTIC MODE 1: CHECK MEASURED VALUES . 

 

2003 Volkswagen New Beetle GLS 

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

  

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Accelerate vehicle uniformly, not at Wide Open Throttle (WOT).  

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Drive for 10 minutes in the highest gear or in the highest driving mode on a level driving surface at a 
constant speed in the range of 65 to 80 km/h at an engine speed of 2000 to 2500 RPM.  

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Park vehicle and let engine run at idle for 3 minutes.  

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Accelerator pedal must not be operated during this time.  

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Read readiness code. See READ READINESS CODE .  

If a 1 is displayed instead of a 0 in the 8-digit number block: 

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Perform a road test anew.  

The following operating conditions must be met during this road test: 

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Drive for 10 minutes in the highest gear or in the highest driving mode on a level driving surface at a 
constant speed in the range of 65 to 80 km/h at an engine speed of 2000 to 2500 RPM.  

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Park vehicle and let run at idle for 3 minutes. 

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Accelerator pedal must not be operated during this time.  

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Read readiness code. See READ READINESS CODE .  

In 8-digit number block: 

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Display position 5: Secondary Air Injection (AIR) system  

and/or 

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Display position 6: EVAP canister system  

a 1 instead of 0 is displayed: 

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Repeat complete work procedure. See WORK PROCEDURE .  

DIAGNOSTIC TROUBLE CODE (DTC) TABLES: 

SAE P0xxx-DTCs 

Fuel and air mixture and additional emission regulations 

DIAGNOSTIC TROUBLE CODE P0016-P0038 

SAE-
DTC

DTC text

Corrective action

P0016

Crankshaft Position - 

Camshaft Position 

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Check Engine Speed (RPM) Sensor -G28-. See CHECK 

ENGINE SPEED (RPM) SENSOR . 

 

2003 Volkswagen New Beetle GLS 

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