# P0172 on the 2018 Honda Civic

The bulletins listed name this code in NHTSA's summary, or are about the same components. A bulletin or a recall listed here may apply to the model year. None of it is a diagnosis.

Nobody has written a description of this code yet.

## Bulletins for this model year that name P0172

- [10230496](https://open.wenmarpro.com/bulletins/10230496), 2023-01-20: Service Bulletin \- Under certain circumstances, the vehicle may experience driveability issues, which may result in DTCs P0300 \(random misfire detected\), P0301 \(No. 1 cylinder misfire detected\), P0302 \(No. 2 cylinder misfire detected\), P0303 \(No. 3 cylinder misfire detected\), P0304 \(No. 4 cylinder misfire detected\), or P0172 \(fuel system too rich\) or a whirling noise coming from the engine compartment.
- [10230495](https://open.wenmarpro.com/bulletins/10230495), 2023-01-20: Service Bulletin \- This bulletin is replaced by S/B 19\-033, Warranty Extension: 2016\-18 Civic 1.5L: Software Update with A/C Control Unit Replacement; DTC P0300, P0301, P0302, P0303, P0304, or P0172; Whirling Noise from Engine.
- [10200411](https://open.wenmarpro.com/bulletins/10200411), 2021-08-17: Dealer Message \- American Honda Motor Co., Inc. \(AHM\) is searching for certain 2018\-2021 Accord 1.5Ts, Civic Sis \& CR\-Vs with a customer complaint of the Malfunction Indicator Light \(MIL\) on with the DTC P030X \(Cylinder Misfire Detected\) or P0172 \(Fuel System Too Rich\) stored. To better understand the cause of this condition, AHM would like to collect specific parts from the vehicle prior to you attempting a repair of any kind.
- [10199453](https://open.wenmarpro.com/bulletins/10199453), 2021-07-27: Dealer Message \- American Honda Motor Co., Inc. \(AHM\) is searching for certain 2018\-2021 Accord 1.5Ts, Civic Sis \& CR\-Vs with a customer complaint of the Malfunction Indicator Light \(MIL\) on with the DTC P030X \(Cylinder Misfire Detected\) or P0172 \(Fuel System Too Rich\) stored. To better understand the cause of this condition, AHM would like to collect specific parts from the vehicle prior to you attempting a repair of any kind.
- [10199318](https://open.wenmarpro.com/bulletins/10199318), 2021-07-20: Dealer Message \- American Honda Motor Co., Inc. \(AHM\) is searching for certain 2018\-2021 Accord 1.5Ts, Civic Sis \& CR\-Vs with a customer complaint of the Malfunction Indicator Light \(MIL\) on with the DTC P030X \(Cylinder Misfire Detected\) or P0172 \(Fuel System Too Rich\) stored. To better understand the cause of this condition, AHM would like to collect specific parts from the vehicle prior to you attempting a repair of any kind.
- [10198177](https://open.wenmarpro.com/bulletins/10198177), 2021-06-22: Dealer Message \- American Honda Motor Co., Inc. \(AHM\) is searching for certain 2018\-2021 Accord 1.5Ts, Civic Sis \& CR\-Vs with a customer complaint of the Malfunction Indicator Light \(MIL\) on with the DTC P030X \(Cylinder Misfire Detected\) or P0172 \(Fuel System Too Rich\) stored. To better understand the cause of this condition, AHM would like to collect specific parts from the vehicle prior to you attempting a repair of any kind.
- [10165769](https://open.wenmarpro.com/bulletins/10165769), 2019-10-09: Service Bulletin \- Under certain circumstances, the vehicle may experience driveability issues, which may result in DTCs P0300 \(random misfire detected\), P0301 \(No. 1 cylinder misfire detected\), P0302 \(No. 2 cylinder misfire detected\), P0303 \(No. 3 cylinder misfire detected\), P0304 \(No. 4 cylinder misfire detected\), or P0172 \(fuel system too rich\) or a whirling noise coming from the engine compartment.
- [10163173](https://open.wenmarpro.com/bulletins/10163173), 2019-07-23: Owner Notification Letter \- Some 2016\-18 Civic vehicles equipped with the 1.5 liter turbocharged engine may experience driveability issues. This may result in Diagnostic Trouble Codes \(DTCs\) P0300 \(random misfire detected\), P0301 \(No. 1 cylinder misfire detected\), P0302 \(No. 2 cylinder misfire detected\), P0303 \(No. 3 cylinder misfire detected\), P0304 \(No. 4 cylinder misfire detected\), or P0172 \(fuel system too rich\) or a whirling noise coming from the engine compartment. These concerns may result in the Malfunction Indicator Lamp \(MIL\) turning on.
- [10163172](https://open.wenmarpro.com/bulletins/10163172), 2019-07-23: Owner Notification Letter \- Some 2016\-18 Civic vehicles equipped with the 1.5 liter turbocharged engine may experience driveability issues. This may result in Diagnostic Trouble Codes \(DTCs\) P0300 \(random misfire detected\), P0301 \(No. 1 cylinder misfire detected\), P0302 \(No. 2 cylinder misfire detected\), P0303 \(No. 3 cylinder misfire detected\), P0304 \(No. 4 cylinder misfire detected\), or P0172 \(fuel system too rich\) or a whirling noise coming from the engine compartment. These concerns may result in the Malfunction Indicator Lamp \(MIL\) turning on.
- [10163171](https://open.wenmarpro.com/bulletins/10163171), 2019-07-23: Owner Notification Letter \- Some 2016\-18 Civic vehicles equipped with the 1.5 liter turbocharged engine may experience driveability issues. This may result in Diagnostic Trouble Codes \(DTCs\) P0300 \(random misfire detected\), P0301 \(No. 1 cylinder misfire detected\), P0302 \(No. 2 cylinder misfire detected\), P0303 \(No. 3 cylinder misfire detected\), P0304 \(No. 4 cylinder misfire detected\), or P0172 \(fuel system too rich\) or a whirling noise coming from the engine compartment. These concerns may result in the Malfunction Indicator Lamp \(MIL\) turning on.