Assuming you mean P0171, it is a lean condition Bank 1. If the engine is running okay I would look for a vacuum leak around the engine, maybe a vacuum hose disconnected or cracked. If the engine is running poorly it could be a plugged fuel filter, a faulty fuel pressure regulator or a faulty fuel pump.
Probably oxygen sensors, catalytic converter, or gas cap needs tightened.
what causes the knock sensor code on a 2002 Kia Spectra. Thank You sreddish@neo.rr.com
Trouble code P0730 means:Incorrect gear ratio
Trouble code P0740 means:Torque converter clutch circuit malfunction
If the check engine light is on, the computer has detected a malfunction and set a code. You will need to have the code scanned to know possible causes.If the check engine light is on, the computer has detected a malfunction and set a code. You will need to have the code scanned to know possible causes.
P0700 is transmission code present. The PCM sets this code when there is a code in the TCM. You will need to have the TCM checked to know it's code and possible causes.
Changed the pcv valve. It fixed my p171 code on my 2001 escort. Have to get the PVC valve from the ford place. They are the only one that carry the right one. PCV valve is available at AutoZone part # PCV 1001 for 2001 Escort SOHC 2.0L
Trouble code P0173 means:Fuel trim malfunction (Bank 2)
That is a code for a problem in the theft alarm or chipped key system.
Trouble code P0173 means: Fuel Trim (Bank 2)
Trouble code P1693 means: A companion DTC was set in both the ECM and PCM
There are several possible causes of a Ford code 1405. Some of the causes could be DPFE sensor harness short, plugged EGR tube, and or a faulty DPFE.