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2005 Dodge Caravan OBD2 Codes P0700 and P0522: Limp Mode & Transmission Issues

Model: Dodge Caravan Fault Code: P0522 Posted: 2015-03-18 05:55

I own a 2005 Dodge Caravan and am experiencing persistent OBD2 diagnostic codes P0700 and P0520. The vehicle is stuck in limp mode and only allows operation in second gear. I suspect the Transmission Control Module (TCM) may be faulty, but I'd like confirmation from experienced users. Can anyone confirm whether a TCM replacement is necessary or if there are other potential causes? Additionally, does low oil pressure contribute to these symptoms?

Related fault codes
P0522P0700
Comments (4)
Anonymous 2015-03-18 09:55

P0700 is a generic transmission code indicating a malfunction in the transmission control system. P0522 refers to abnormal engine oil pressure. First, verify that there's a stable 5V reference signal at the oil pressure gauge sensor. Check the fuse and transmission relay for proper 12V power supply. Any recent repairs or maintenance work on the vehicle?

Anonymous 2015-03-18 10:00

No, I haven't had any recent repairs. The transmission has been slipping intermittently—what I noticed was that engine RPMs seemed to lag behind accelerator input. This led me to suspect a faulty Transmission Control Module (TCM). Could low oil pressure be causing the limp mode and gear behavior? I'll verify these points soon.

Anonymous 2015-03-18 10:12

Check the underhood fuse box—specifically fuse #15 and the transmission relay. A blown fuse or faulty relay can cause both P0700 and P0522 to appear, especially if power is not reaching the transmission control system.

Anonymous 2015-03-18 12:53

I'll check those components right away—thanks for the guidance!