P0506 AUDI Idle Air Control System RPM Lower Than Expected Large vacuum leak on engine

Possible causes – Dirty throttle body– Electric throttle control actuator misadjusted or damaged– Faulty Electric throttle control actuator– Intake air leak– Poor electrical connection to the Intake Air Control (IAC) valve Tech description If there are no intake leaks, clean throttle body, adjust engine idle and erase engine code. If the code comes back you…

P0507 AUDI Idle Air Control System RPM Higher Than Expected

Possible causes – Dirty throttle body– Electric throttle control actuator misadjusted or damaged– Faulty Electric throttle control actuator– Intake air leak– Poor electrical connection to the Intake Air Control (IAC) valve Tech description If there are no intake leaks, clean throttle body, adjust engine idle and erase engine code. If the code comes back you…

P0748 AUDI Pressure Control Solenoid A Electrical

Possible causes – Dirty transmission fluid– Low transmission fluid level– Faulty line pressure solenoid valve ‘A’– Line pressure solenoid valve ‘A’ harness is open or shorted– Line pressure solenoid valve ‘A’ circuit poor electrical connection When is the obd code mean? Engine Control Module (ECM) detectes an open or shorted condition on the solenoid circuit…

P0401 AUDI Exhaust Gas Recirculation Flow Insufficient Detected

Possible causes – EGR passage clogged– Faulty EGR Vacuum Modulator Valve– Faulty EGR Valve– Faulty EGR solenoid valve– EGR solenoid valve harness is open or shorted– EGR solenoid valve circuit poor electrical connection– Dead (Weak) battery– Faulty EGR temperature sensor and circuit– Exhaust gas leaks Tech description EGR flow malfunction could be caused by a…

P0286 AUDI Cylinder 9 Injector Circuit High

Possible causes – Dirty Fuel Injector 9– Faulty Fuel Injector 9– Plugged Fuel Injector 9– Fuel injector 9 harness is open or shorted– Fuel injector 9 circuit poor electrical connection Tech description Clogged or partially clogged fuel injector can cause this code. Start by performing an injector flush before replacing the injector. Symptoms – Engine…

P0287 AUDI Cylinder 9 Contribution Balance

Possible causes – Dirty Fuel Injector 9– Faulty Fuel Injector 9– Plugged Fuel Injector 9– Fuel injector 9 harness is open or shorted– Fuel injector 9 circuit poor electrical connection Tech description Clogged or partially clogged fuel injector can cause this code. Start by performing an injector flush before replacing the injector. Symptoms – Engine…

P0275 AUDI Cylinder 5 Contribution Balance

Possible causes – Dirty Fuel Injector 5– Faulty Fuel Injector 5– Plugged Fuel Injector 5– Fuel injector 5 harness is open or shorted– Fuel injector 5 circuit poor electrical connection Tech description Clogged or partially clogged fuel injector can cause this code. Start by performing an injector flush before replacing the injector. Symptoms – Engine…

P0276 AUDI Cylinder 6 Injector Circuit Low

Possible causes – Dirty Fuel Injector 6– Faulty Fuel Injector 6– Plugged Fuel Injector 6– Fuel injector 6 harness is open or shorted– Fuel injector 6 circuit poor electrical connection Tech description Clogged or partially clogged fuel injector can cause this code. Start by performing an injector flush before replacing the injector. Symptoms – Engine…