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2006 Dodge Caravan P0129 Code: Diagnosis and Fix for BAROMETRIC PRESSURE OUT-OF-RANGE LOW

Model: 2006 Dodge Caravan Fault Code: P0129 Posted: 2018-12-09 19:45

I recently tried to start my 2006 Dodge Caravan with a 3.6L V6 engine, but it won't turn over after driving to Vegas. For the first time in years, I'm now getting the P0129 diagnostic trouble code — BAROMETRIC PRESSURE OUT-OF-RANGE LOW. I'm confused because this issue hasn't appeared before, and I don't know how to resolve it. Any suggestions on troubleshooting or fixing this specific code?

Related fault codes

P0129

Comments (3)

Anonymous 2018-12-10 10:07

Yes, I recommend using an OBD2 scanner to confirm the exact codes being triggered — sometimes key-related issues or sensor malfunctions can prevent full code retrieval. The P0129 code specifically refers to a barometric pressure sensor reading outside of normal range (low). Start with basic checks: fuel pressure, spark plug condition, and injector pulse. Note: While I've seen this issue on 3.8L and 3.3L models, there's limited documented data for the 3.6L variant in this vehicle — so results may vary.

Anonymous 2018-12-10 23:51

Thanks for the clarification — that helps a lot with understanding what to check next.

Anonymous 2018-12-15 09:51

Compression test might be necessary if other diagnostics don't resolve the issue. Low compression could contribute to starting problems and may correlate with sensor readings like P0129.