What does po172 code mean?
What the P0172 code means. P0172 indicates that there is too much gasoline being detected in the exhaust gases exiting the combustion chamber. The ECU uses a number of instruments, such as the mass air flow sensor (MAF), oxygen sensors, and manifold absolute pressure (MAP) to monitor the air-fuel ratio of the engine.
What is a P2097 code?
P2097 code definition P2097 is a general OBD-II diagnostic trouble code that indicates a fault with the post catalyst fuel trim system being too rich in bank 1. This code may be seen with misfire, lean, or rich codes as well.
How do you check a o2 sensor?
To perform the actual test, start the car again and check the voltmeter’s voltage readings. The o2 sensor’s voltage should fluctuate within the 100mV – 900mV (0.10V to 0.90V) range. If it is within this range, the o2 sensor is operating normally and you can stop testing.
What causes PO172 code?
Causes of Code P0172 The most common reasons include a faulty oxygen sensor or a dirty mass air flow sensor (MAF). In addition, here are some additional causes of throwing code PO172. Cooling system that’s been retrofitted (ie: thermostat removed, fan running direct, etc.)
What makes one bank run rich?
These include the manifold absolute pressure, mass air flow sensor, and the oxygen sensors. Whenever there is too much fuel, that means there is not enough oxygen. If the engine control unit detects the bank 1 cylinder is “too rich,” it means it has too much fuel and not enough in oxygen.
When to use trouble code p0172 or po175?
The optimal ratio is 14.7:1 (air:fuel) When your powertrain/engine control computer receives a higher than normal voltage reading beyond the time allowed, indicating a rich air fuel ratio, trouble code P0172 or PO175 is set and the CEL is illuminated.
What causes a car to throw a code po172?
The most common reasons include a faulty oxygen sensor or a dirty mass air flow sensor (MAF). In addition, here are some additional causes of throwing code PO172. Faulty fuel injectors leaking fuel into the combustion chamber
How much does it cost to diagnose a p0172 code?
The cost of diagnosing the P0172 code is 1.0 hour of labor. The auto repair labor rates vary widely across the country, and even within the same city. Most auto repairs shops charge between $75 and $150 per hour. When is the P0172 code detected? – Fuel injection system does not operate properly.
What does it mean when your ECU says p0172?
P0172 indicates that there is too much gasoline being detected in the exhaust gases exiting the combustion chamber. The ECU uses a number of instruments, such as the mass air flow sensor (MAF), oxygen sensors, and manifold absolute pressure (MAP) to monitor the air-fuel ratio of the engine.