7355 code(s) in this category. Page 16 of 307. Select one to see the detailed diagnosis.
Motor (P)
Fuel composition (e.g. ethanol fraction on flex-fuel vehicles) outside expected range. Wrong fuel filled or se…
ECU took longer than allowed to enter closed-loop air/fuel ratio control. Most often O2 sensor heater aging or…
Closed-loop fuel trim hit its lean correction limit because mixture is structurally too rich. Likely fuel pres…
Closed-loop fuel trim hit its rich correction limit because mixture is structurally too lean. Likely vacuum le…
ECU took longer than allowed to close the loop on fuel pressure control. Pressure rise too slow at start.…
Closed-loop fuel pressure control hit its lower limit because rail pressure is structurally too high.…
Closed-loop fuel pressure control hit its upper limit because rail pressure is structurally too low.…
The computer detects too much air and too little fuel.…
The computer detects too much air and too little fuel in the bank 1 mixture.…
The computer detects excess fuel relative to air in bank 1.…
Same as P0172 but for bank 2.…
Same as P0171 but for engine bank 2.…
Same as P0172 but for engine bank 2.…
The ECU detects an electrical fault in the flex-fuel composition sensor circuit. The sensor measures ethanol c…
The flex-fuel composition sensor signal is within electrical limits but does not match expected values for the…
The flex-fuel composition sensor signal is below the minimum threshold. Likely shorted to ground, open circuit…
The flex-fuel composition sensor signal exceeds the maximum threshold. Likely shorted to voltage, open ground …
Generic electrical fault on cylinder head temperature sensor A (CHT sensor — used on engines without conventio…
CHT sensor A reading implausible.…
CHT sensor A signal voltage below expected range. Wiring faults of this kind typically come from chafing, wate…
CHT sensor A signal voltage above expected range. Wiring faults of this kind typically come from chafing, wate…
Intermittent signal from CHT sensor A. Wiring faults of this kind typically come from chafing, water ingress a…
Air filter on the EVAP leak detection pump module is restricted. Leak detection cannot establish reference pre…
The ECU detects an electrical fault in the fuel temperature sensor A circuit. Fuel temperature input is missin…