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Home >> Jeep >> 2014 >> Wrangler Sahara, Standard Trans >> Repair and Diagnosis >> Engine Performance >> Testing & Diagnosis >> 3.6L - DTCS P2135 To U1418 >> Diagnosis And Testing >> P258A- Electric Vacuum Pump Circuit >> Possible Causes

Possible Causes

Possible Causes
FUSED RUN/START CIRCUIT OPEN
(T110) EVP RELAY CONTROL CIRCUIT OPEN
(T110) EVP RELAY CONTROL CIRCUIT SHORTED TO GROUND
EVP RELAY
POWERTRAIN CONTROL MODULE (PCM)

Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. Refer to  PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE  . 

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