What does code P1188 mean?

Q: What does code P1188 mean?

O2 Sensor Heater Circuit Resistance. P1188 on a Jaguar means the engine control module has detected an abnormal resistance in the heater circuit of a heated oxygen sensor, which is used to bring the sensor up to operating temperature quickly after a cold start. The module monitors the current flow through the heater element and flags this code when the measured resistance falls outside the expected range for the sensor's design.

DTC codes / Jaguar codes / P1188

P1188 · JaguarO2 Sensor Heater Circuit Resistance

P1188 on a Jaguar means the engine control module has detected an abnormal resistance in the heater circuit of a heated oxygen sensor, which is used to bring the sensor up to operating temperature quickly after a cold start. The module monitors the current flow through the heater element and flags this code when the measured resistance falls outside the expected range for the sensor's design.

SystemPowertrain

Code typeJaguar specific

SeverityMedium

Fix difficultyIntermediate

AreaFuel and air metering

Guidance is general and written for Jaguar vehicles. Exact tests and values vary by model, so confirm the fault before replacing parts.