P1187 JEEP Possible Causes
- Faulty MAP sensor
- MAP sensor harness is open or shorted
- Poor electrical connection in MAP sensor circuit
- Faulty Throttle Inlet Pressure sensor (TIP)
- Throttle Inlet Pressure sensor (TIP) harness is open or shorted
- Poor electrical connection in Throttle Inlet Pressure sensor (TIP) circuit
- Blocked passage or mechanical engine condition
How to Fix JEEP Code P1187?
Start by checking the “possible causes” listed above. Visually inspect the corresponding wiring harness and connectors. Look for damaged components and check for broken, bent, pushed out, or corroded connector pins.
Possible Symptoms
- Engine light on (or engine service warning light soon)
P1187 JEEP Meaning
The Engine Control Module (ECM) detected a correlation error between the MAP sensor and the Throttle Inlet Pressure sensor (TIP)