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Home >> Jeep >> 2014 >> Wrangler Sahara, Standard Trans >> Repair and Diagnosis >> External Pages >> Different car >> Section 161 (3.6L - DTCS P2135 To U1418) >> DTC Troubleshooting >> P258B-Electronic Vacuum Pump Performance >> Possible Causes

Possible Causes

WARNING: This page is about a different car, the 2016 Dodge Journey and 2015 Dodge Journey. However, it is still accessible from the selected car via links, so may be relevant.
Possible Causes
FUSED B+ CIRCUIT OPEN
ELECTRIC VACUUM PUMP OUTPUT CIRCUIT OPEN
ELECTRIC VACUUM PUMP OUTPUT CIRCUIT SHORTED TO GROUND
GROUND CIRCUIT OPEN
PINCHED, CUT OR OPEN VACUUM SUPPLY LINE
VACUUM PRESSURE SENSOR
BRAKE VACUUM BOOSTER
ELECTRIC VACUUM PUMP
ANTI-LOCK BRAKE SYSTEM (ABS) MODULE

Always perform the PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE before proceeding. Refer to  PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE  . .