i just had my BC 272s installed, and i keep throwing a CEL. when i scanned the code it came up as Bank 1: running to rich (dont remember the number). what does this mean here? the car is tuned, my tuner says its coming on when the car lopes at idle (which it does i only had it come on at idling)

 

Info from manual for:

DTC P0172: SYSTEM TOO RICH
.
TECHNICAL DESCRIPTION
• If a malfunction occurs in the fuel system, the fuel trim value becomes too small.
• The ECM checks whether the fuel trim value is within a specified range.
.
DTC SET CONDITIONS
Check Conditions
• Engine coolant temperature is higher than 77°C (171°F).
• Under the closed loop air/fuel ratio control.

Judgment Criteria
• Long-term fuel trim has continued to be −12.5 percent for 5 seconds.
or
• Short-term fuel trim has continued to be −25.0 percent for 5 seconds.
.
TROUBLESHOOTING HINTS (The most likely causes for this code to be set are: )
• Volume airflow sensor failed.
• Injector failed.
• Incorrect fuel pressure.
• Engine coolant temperature sensor failed.
• Intake air temperature sensor failed.
• Barometric pressure sensor failed.
• Harness damage in injector circuit, or connector damage.
• ECM failed.

Looks like first thing is to check your MAF and injector connectors for a loose connection.

 

thanks

 

How did you resolve it? I'm in the same boat

 

it was a tuning issue, it was because my fuel trims were out of whack. car just needed some more fine tuning

 

did the car throw the code on the stock fuel pump or an upgraded one?

Anyhow, I'm looking forward to getting your stock FP in the mail any day now... whether or not its the cause of my problem is fine....I neec to have the stock fp on hand anyway