P0110, P0111, P0112 - Intake Air Temperature Sensor

P0110, P0111, P0112 - Intake Air Temperature Sensor - Fault Code - CM8; CR8; CS8; DR5; DS5; HF8; HG8; HJ8; HK8; HL8; LG1; LGX; LJ2; LK2; LL1; PB1; PJ1; PJZ; PM1; PR1; PRB; PRC; PS1; PSB; PSC; PWC; PX1; PXB; PXC; PY1; PYB; PYC

Fault Code	Possible cause	Action
P0110	Intake air temperature sensor open circuit or short circuit to 5 volt sensor supply	View and note diagnostic software 'freeze-frame' data if available. View and note diagnostic software 'sensor' data. Make sure sensor connector is secure. Disconnect engine ECM and proceed to pinpoint test 1:
P0111	Intake air temperature sensor signal out of range
P0112	Intake air temperature sensor short circuit to ground	Disconnect engine ECM and sensor and proceed to pinpoint test 6:

Fault Code

Possible cause

Action

P0110

Intake air temperature sensor open circuit or short circuit to 5 volt sensor supply

View and note diagnostic software 'freeze-frame' data if available.

View and note diagnostic software 'sensor' data.

Make sure sensor connector is secure. Disconnect engine ECM and proceed to pinpoint test 1:

P0111

Intake air temperature sensor signal out of range

P0112

Intake air temperature sensor short circuit to ground

Disconnect engine ECM and sensor and proceed to pinpoint test 6:

Test		Result	Action
1	Check cable and terminal integrity: - Engine ECM pin A07 - Engine ECM pin A17	OK	Proceed to test 2
Faulty	Rectify fault, proceed to test 7
2	Check resistance value: - Engine ECM pin A17 to ground (Temperature dependent - see below)	OK	Proceed to test 6
Open circuit	Disconnect air temperature sensor and proceed to test 3
Short circuit	Disconnect air temperature sensor and proceed to test 4
3	Check cable continuity: - Engine ECM pin A17 to sensor pin 1 - Engine ECM pin A07 to sensor pin 2 - Engine ECM pin B12 to sensor pin 2 - Ground to sensor pin 2	OK	Proceed to test 5
Open circuit	Locate and rectify wiring fault, proceed to test 7
4	Check cable for short circuit: - Engine ECM pin A17 to Engine ECM pin A08 - Engine ECM pin A17 to Engine ECM pin A21 - Engine ECM pin A17 to Engine ECM pin B12	OK	Proceed to test 5
Short circuit	Locate and rectify wiring fault, proceed to test 7
5	Check sensor resistance: - Sensor pin 1 to sensor pin 2 (Temperature dependent - see below)	OK	Proceed to test 7
Faulty	Renew air temperature sensor, proceed to test 7
6	Check cable for short circuit: - Engine ECM pin A17 to ground	OK	Proceed to test 7
Short circuit	Locate and rectify wiring fault, proceed to test 7
7	Reconnect harness, clear fault code and run engine to verify fault cleared.	OK	Action complete - quit test
Fault still present	Contact Triumph service

If engine is warm, remove the sensor and allow time to cool to ambient temperature prior to test.