2004 Audi A4 1.8L Hesitation, MIL Lamp on
Car running poorly check engine light on. Found 5 DTC"s Tested o2 sensor/ A/F sensor heater working and sensor working. Cooling fan stays on all the time. Found Identifix bulletins leading to Leak detection pump(LDP). LDP is not receiving power tested fuel pum...
FIX posted 2/21/2011
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Message Closed w/FIX
Vehicle Data2004 Audi A4
Trouble Codes
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Message Closed w/FIX
Vehicle Data
2004 Audi A4
VIN | WAUJC68EX2 |
Engine | 1.8 L / 4 cyl / GAS |
Trans | 5-speed Automatic (Electronic) |
Delivery | Fuel Injection / mpi |
Emissions | OBD-II Compliant |
Symptoms | Hesitation, MIL Lamp On |
Occurs | Always |
Trouble Codes
P0135 | Heated Oxygen Sensor (Bank 1 Sensor 1) Heater Circuit Malfunction |
P0139 | Heated Oxygen Sensor (Bank 1 Sensor 2) Slow Response |
P0171 | Fuel System Too Lean (Bank 1) |
P0172 | Fuel System Too Rich (Bank 1) |
P1296 | 5-Volt VREF Supply Not Present |