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Home >> Audi >> 2014 >> A5 Prestige >> Repair and Diagnosis >> External Pages >> Different car >> Section 10 (1.8L - Turbo Engine Controls - Generic Scan Tool, Engine Code(S): AMB) >> ST - Generic Scan Tool >> Diagnostic Trouble Code (DTC) tables >> SAE P2xxx-DTCs >> Fuel and air ratio

Fuel and air ratio

WARNING: This page is about a different car, the 2006 Audi A4, 2005 Audi A4, 2004 Audi A4, 2003 Audi A4, and 2002 Audi A4. However, it is still accessible from the selected car via links, so may be relevant.
DTC Error Message Diagnostic Procedure Malfunction Criteria and Threshold Value Secondary Parameters with Enable Conditions Monitoring Time Length Frequency of checks, MIL Illum
P2101 Evaporative Emission System Leak Detection Pump Control Circuit Low Max. current- > 80% Throttle valve angle deviation- Max=4 50% ECM power stage-Failure --- 0.5 Sec 0.5 Sec
  • 2 DCY
P2122 Throttle/Pedal Position Sensor/Switch C Circuit Low Input
  • Check the Throttle Position (TP) Sensor G79/Accelerator Pedal Position Sensor 2 G185. Refer to → Throttle Position (TP) Sensor G79/Accelerator Pedal Position Sensor 2 G185 , checking (Engine Code AMB)  .
 (ULEV) Lower threshold- 0.63 V (LEV) Lower threshold- 0.63 V Sensor voltage 2- > 1.11 V Sensor voltage 2- > 1.15 V 0.5 Sec 0.5 Sec
  • 2 DCY
P2123 Throttle/Pedal Position Sensor/Switch C Circuit High Input
  • Check the Throttle Position (TP) Sensor G79/Accelerator Pedal Position Sensor 2 G185. Refer to → Throttle Position (TP) Sensor G79/Accelerator Pedal Position Sensor 2 G185 , checking (Engine Code AMB)  .
 Upper threshold- > 4.82 Volts   0.5 Sec
  • 2 DCY
P2127 Accelerator pedal position sender 2 - G185 signal too low
  • Check the Throttle Position (TP) Sensor G79/Accelerator Pedal Position Sensor 2 G185. Refer to → Throttle Position (TP) Sensor G79/Accelerator Pedal Position Sensor 2 G185 , checking (Engine Code AMB)  .
 (ULEV) Lower threshold- 0.43 V (LEV) Lower threshold- 0.33 V Sensor voltage 2- > 1.11 V Sensor voltage 2- > 1.15 V 0.5 Sec 0.5 Sec
  • 2 DCY
  • 2 DCY
P2128 Accelerator pedal position sender 2 - G185 signal too high
  • Check the Throttle Position (TP) Sensor G79/Accelerator Pedal Position Sensor 2 G185. Refer to → Throttle Position (TP) Sensor G79/Accelerator Pedal Position Sensor 2 G185 , checking (Engine Code AMB)  .
 Upper threshold- > 4.94   0.5 Sec
  • 2 DCY
P2138 Throttle/Pedal Position Sensor/Switch C Circuit Range/Performance
  • Check the Throttle Position (TP) Sensor G79/Accelerator Pedal Position Sensor 2 G185. Refer to → Throttle Position (TP) Sensor G79/Accelerator Pedal Position Sensor 2 G185 , checking (Engine Code AMB)  .
 (ULEV) Comparison signal, sensor 1 vs- sensor 2 difference- > 0.21 - 1.11 V (LEV) Comparison signal, sensor 1 vs- sensor 2 difference- > 0.21 - 1.23 V Sensor voltage1,2- > 0.84V Sensor voltage 1, 2- >0.86V 0.5 Sec 0.5 Second
  • 2 DCY
  • 2 DCY
P2181 Malfunction in cooling system Engine coolant temperature- 80.25°C Sufficient mass air- 8 18 kg Engine coolant temperature- > 10 K Sufficient mass air- 4 11.5 kg Engine start temperature- 5 30°C Average air mass range (depending on average speed)- > 18 60 kg/h Average vehicle speed- 9 80 Mph Total time fuel cut off- 100 sec Engine start temperature- 5 30°C Average air mass range (depending on average speed)- > 24 62 kg/h Average vehicle speed- 22 74 Mph Total time fuel cut off- 100 seconds Delta ambient pressure per monitor- 15hPa Once per driving cycle Once per driving cycle 2 DCY
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