04-03-2005, 01:16 AM
Reading Porsche 968 Fault Code with Check-Engine Lamp Basic Procedure:
Verify operation of Check-Engine lamp. (Lamp should light up when ignition is switched on) Fault codes on USA vehicles may be read using the Check-Engine lamp. To trigger the flashing code, fully depress the accelerator pedal for 3 seconds with the engine off and the ignition on until the Check-Engine lamp flashes. Then ease off the throttle. Light will repeatedly flash stored code sequence(s) until ignition is turned off.
Known Limitations:
Diagnostics of this nature are typically performed by professionals with access to specialized tools. The Bosch Hammer/System Tester 9288 (or one of it's successors) is the preferred way to read fault codes and will be required to erase the fault memory. Also, the fault codes listed are intended to serve as a starting point for follow-on diagnostic efforts and, thus, knowing the fault code is not necessarily the same as knowing which component is faulty.
Fault Codes (968):
Flashing Code* Fault Description
1-5 No Fault
1-1-1-1 Supply voltage
1-1-1-4 Engine temperature sensor 2
1-1-1-6 Throttle potentiometer
1-1-1-7 Oil temperature sensor
1-1-1-8 Rpm signal
1-1-1-9 Speed signal - Speedometer
1-1-2-1 Air flow sensor
1-1-2-3 Oxygen regulation
1-1-2-4 Oxygen sensor
1-1-2-6 Ignition timing change
1-1-2-7 Open winding of idle stabilizer
1-1-2-8 Close winding of idle stabilizer
1-1-2-9 Activation of AC relay
1-1-3-1 Knock sensor 1
1-1-3-2 Knock sensor 2
1-1-3-3 Control unit faulty
1-1-3-4 Hall signal
1-1-3-5 VarioCam
1-1-3-6 Idle CO potentiometer
1-1-4-1 Control unit faulty
1-1-4-2 Fuel pump relay (DME-relay)
1-1-4-3 Tank ventilation relay
1-1-4-5 Check Engine warning lamp
1-1-5-1 Injection valve cylinder 1
1-1-5-2 Injection valve cylinder 2
1-1-5-3 Injection valve cylinder 3
1-1-5-4 Injection valve cylinder 4
*Second number in sequence may vary (1 is for a constant fault. 2 is for a loose contact)
Verify operation of Check-Engine lamp. (Lamp should light up when ignition is switched on) Fault codes on USA vehicles may be read using the Check-Engine lamp. To trigger the flashing code, fully depress the accelerator pedal for 3 seconds with the engine off and the ignition on until the Check-Engine lamp flashes. Then ease off the throttle. Light will repeatedly flash stored code sequence(s) until ignition is turned off.
Known Limitations:
Diagnostics of this nature are typically performed by professionals with access to specialized tools. The Bosch Hammer/System Tester 9288 (or one of it's successors) is the preferred way to read fault codes and will be required to erase the fault memory. Also, the fault codes listed are intended to serve as a starting point for follow-on diagnostic efforts and, thus, knowing the fault code is not necessarily the same as knowing which component is faulty.
Fault Codes (968):
Flashing Code* Fault Description
1-5 No Fault
1-1-1-1 Supply voltage
1-1-1-4 Engine temperature sensor 2
1-1-1-6 Throttle potentiometer
1-1-1-7 Oil temperature sensor
1-1-1-8 Rpm signal
1-1-1-9 Speed signal - Speedometer
1-1-2-1 Air flow sensor
1-1-2-3 Oxygen regulation
1-1-2-4 Oxygen sensor
1-1-2-6 Ignition timing change
1-1-2-7 Open winding of idle stabilizer
1-1-2-8 Close winding of idle stabilizer
1-1-2-9 Activation of AC relay
1-1-3-1 Knock sensor 1
1-1-3-2 Knock sensor 2
1-1-3-3 Control unit faulty
1-1-3-4 Hall signal
1-1-3-5 VarioCam
1-1-3-6 Idle CO potentiometer
1-1-4-1 Control unit faulty
1-1-4-2 Fuel pump relay (DME-relay)
1-1-4-3 Tank ventilation relay
1-1-4-5 Check Engine warning lamp
1-1-5-1 Injection valve cylinder 1
1-1-5-2 Injection valve cylinder 2
1-1-5-3 Injection valve cylinder 3
1-1-5-4 Injection valve cylinder 4
*Second number in sequence may vary (1 is for a constant fault. 2 is for a loose contact)
Black 03' Turbo X50
Black 05' Denali
(This post was last modified: 04-03-2005, 01:27 AM by SANDOVAL.)
