DTC code

P1109: RO Sensor Circuit Out of Range High

Vehicle-specific published guides for this diagnostic trouble code.

RO Sensor Circuit Out of Range High

P1109 may mean the ECM/PCM is seeing a barometric pressure signal that appears higher than expected or outside its normal plausibility range.

Article vehicle: 2010-2015 Honda Civic 1.8 Gas

P1109 may indicate the ECM/PCM is seeing the BARO sensor circuit as out of range.

Article vehicle: 2010-2017 Honda Accord 2.4 Gas

P1109 may mean the ECM/PCM is seeing a barometric pressure input that appears too high or not plausible for the operating conditions.

Article vehicle: 2010-2016 Honda Cr V 2.4 Gas