Check engine light questions..
#1
10-25-2012, 08:08 PM
Check engine light questions..
Hey guys! My wife and I bought a 2001 VW Jetta 1.8 a couple weeks ago, no lights were on and it ran great, absolutely no problem. Now it has been idling odd and the epc light has come on and off twice and now the check engine light is on. I took it to O'Reillys to read the computer and the codes that came up were
P1128, P1297, and P0507.
And when i started it up to leave it died and wouldn't stay running unless I pushed the gas to keep the RPMs up.The guy there told me it was a vaccum leak but I'd like a second opinion...
P1128, P1297, and P0507.
And when i started it up to leave it died and wouldn't stay running unless I pushed the gas to keep the RPMs up.The guy there told me it was a vaccum leak but I'd like a second opinion...
#2
10-26-2012, 06:05 AM
Welcome to the forum. 
VAG Error Code: 17536
VAG Error Code: 16891
https://volkswagenforum.com/forum/ne...gnature-34185/
VAG Error Code: 17536
EOBD II Error Code: P1128
Fault Location:
Long Term Fuel Trim, Entire Speed/Load Range, Bank 1 - System too Lean
Long Term Fuel Trim, Entire Speed/Load Range, Bank 1 - System too Lean
Possible Cause:
Malfunction Indicator Lamp (MIL)(K83) active.
Malfunction Indicator Lamp (MIL)(K83) active.
Mass Air Flow (MAF) Sensor faulty.
Oxygen Sensor Control faulty.
Oxygen Sensor(s) faulty.
Fuel pressure/pump.
Fuel Injector(s) faulty.
Intake/exhaust leak.
Secondary air injection (AIR) system.
Hose leak.
Oxygen Sensor Control faulty.
Oxygen Sensor(s) faulty.
Fuel pressure/pump.
Fuel Injector(s) faulty.
Intake/exhaust leak.
Secondary air injection (AIR) system.
Hose leak.
Possible Solutions:
Check Mass Air Flow (MAF) Sensor.
Check Oxygen Sensor Control.
Check Oxygen Sensor(s).
Check Fuel Injector(s).
Check Mass Air Flow (MAF) Sensor.
Check Oxygen Sensor Control.
Check Oxygen Sensor(s).
Check Fuel Injector(s).
VAG Error Code: 17705
EOBD II Error Code: P1297
EOBD II Error Code: P1297
Fault Location:
Pressure Drop between Turbo and Throttle Valve (check D.V.!)
Pressure Drop between Turbo and Throttle Valve (check D.V.!)
Possible Cause:
Malfunction Indicator Lamp (MIL)(K83) ON.
Malfunction Indicator Lamp (MIL)(K83) ON.
Power Loss.
Leaking Hoses and/or Pipes between Components.
Boost Pressure Control Valve (N249) faulty.
Boost Pressure Control Valve (N249) faulty.
Diverter Valve faulty.
Throttle Body dirty.
Throttle Body dirty.
Possible Solutions:
Check Hoses and Pipes between Components.
Check Hoses and Pipes between Components.
Check / Replace Boost Pressure Control Valve (N249).
Check / Replace Diverter Valve.
Check / Clean Throttle Body.
Perform Throttle Body Alignment.
Check / Replace Diverter Valve.
Check / Clean Throttle Body.
Perform Throttle Body Alignment.
Special Notes:
Did anyone install an extra (wrong) dump valve?
Did anyone install an extra (wrong) dump valve?
When found in the NAR (North American Region) 2.0T (BPY) check RVUTB: 01-09-03 or 2018919 for updated Crankcase Breather Valve.
If the breather valve is faulty, full engine vacuum is typically found when removing the oil cap at idle.
If the breather valve is faulty, full engine vacuum is typically found when removing the oil cap at idle.
VAG Error Code: 16891
EOBD II Error Code: P0507
Fault Location:
Idle Speed Control (ISC) System (G28) - RPM Higher Than Expected
Possible Cause:
Malfunction Indicator Lamp (MIL)(K83) active.
Throttle Valve Control Module (J338) dirty/faulty.
Wiring/Connector(s) from/to Throttle Valve Control Module (J338).
Vacuum Leak.
Possible Solutions:
Check Throttle Valve Control Module (J338).
Check Wiring/Connector(s) from/to Throttle Valve Control Module (J338).
Check Intake System for Leaks.
Check Intake System for Leaks.
Special Notes:
When found in the NAR (North American Region) 2.0T (BPY) check RVUTB: 01-09-03 or 2018919 for updated Crankcase Breather Valve.
If the breather valve is faulty, full engine vacuum is typically found when removing the oil cap at idle.
As taken from my https://volkswagenforum.com/forum/ge...oftware-34973/
https://volkswagenforum.com/forum/ne...gnature-34185/
Last edited by Keithuk; 10-26-2012 at 06:07 AM.
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