CAR OBD CODES
OBD/DTC Search, e.g.P0172
CAR OBD CODES P0172
P0172 OBD Code Definition:
P0172 Fuel Injection System Too Rich Bank 1
P0172 OBD Code Description:
OBD2 Code P0172 Definition:
Basically this means that an oxygen sensor in bank 1 detected a rich condition (too little oxygen in the exhaust). On V6/V8/V10 engines, Bank 1 is the side of the engine that has cylinder #1. Note: This DTC is very similar to P0175, and in fact your vehicle may show both codes at the same time.
Symptoms
Possible sumptoms of P0172
You will more than likely not notice any drivability problems, although there may be symptoms such as a misfire.
Possible Causes
Possible causes of P0172
The MAF (Mass Air Flow) Sensor is dirty or faulty. Note: The use of “oiled” air filters can cause the MAF to become dirty if the filter is over-oiled. There is also an issue with some vehicles where the MAF sensors leak the silicone potting material used to protect the circuitry. There could be a vacuum leak. There could be a fuel pressure or delivery problem
Possible Solutions
Inspect all vacuum and PCV hoses, replace if necessary Cleanthe MAF sensor. Consult your service manual for it’s location if you need help. I find it’s best to take it off and spray it with electronics cleaner or brake cleaner. Make sure you are careful not to damage the MAF sensor, and make sure it’s dry before reinstalling Inspect fuel lines for cracks, leaks, or pinches Check the fuel pressure at the fuel rail Check the fuel injectors, they may be dirty. Use fuel injector cleaner or get them professionally cleaned/replaced. Check for an exhaust leak before the first oxygen sensor (this is unlikely to cause the problem, but it is possible)
Note: The information on the P0172 error code is purely informative, if you need more useful information, please consult your technician.
B2451 B118D B2688 B10E7 B11BB B1166 B2104 B0104 B2383 B2499 B2374 B00B2 B12BF B1590 B1315 OBDII Chassis Codes
C0215 C1988 C1448 C198D C0327 C2250 C1230 C198F C1914 C1314 C1213 C1107 C0658 C1795 C1300 OBDII Network Codes
U0442 U2512 U0295 U0477 U2473 U0170 U1005 U2514 U0233 U0452 U0310 U0404 U1230 U1901 U1198 OBDII Powertrain Codes
P075E P0C1A P20A9 P0BFE P0C29 P051B P2054 P020F P132B P2139 P1908 P2208 P2512 P246F P054A