How to fix JEEP code P1159?
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)
P1159 JEEP Meaning
The Engine Control Module (ECM) detected an engine speed above 100 RPM without the activation of the starter relay control.