P0231 on RAM: How to Diagnose & Fix
Fuel Pump Secondary Circuit - Low
1 RAM model · 1 documented issue · 1 critical · $50-$1,200 repair
P0231 on RAM by model: symptoms, diagnosis and fix
The TIPM controls most electrical functions and commonly fails, causing erratic behavior. The fuel pump relay inside the TIPM is particularly prone to failure, resulting in no-start conditions. Horn honking randomly, headlights flickering, and wipers activating on their own are common symptoms.
Common Symptoms
- No start condition
- Fuel pump not priming
- Random horn honking
- Headlights flickering
- Wipers activating randomly
- Battery drain
- Multiple warning lights on dash
How to Fix
For fuel pump relay failure: Install an external bypass relay kit ($30-50 DIY) to power fuel pump directly. For complete TIPM replacement: Use remanufactured unit ($400-600) or new OEM ($800-1,200). Some electrical shops can rebuild existing TIPM for $200-400. Warranty lawsuit settlements may cover repairs for some VINs.
What you need to fix it
Only diagnosis- and fitment-reviewed repair parts are linked here.
- MAKS 04692123 TIPM mail-in repair service
2009 Dodge Ram 1500 original module with base number 04692123 only; match the complete label before ordering. Other 2009 TIPM families need their own service.
- MAKS 04692194 TIPM mail-in repair service
2010 Dodge Ram 1500/2500 original TIPM base number 04692194 as explicitly listed; confirm full suffix, engine, drive and options.
- MAKS 04692319 TIPM repair/replacement service
2011 Dodge Ram 1500 gasoline variants using base number 04692319; match complete label and choose repair or VIN programming as appropriate. Fitment/availability: Direct module/service page live at review
- MAKS 68089323 TIPM mail-in repair service
2012 Dodge Ram 1500 gasoline/flex original TIPM base number 68089323; confirm complete suffix, engine and options.
- MAKS 68089578 TIPM/PDC mail-in repair service
2013-2014 Ram 1500 original module 68089578AA-AI family; enter VIN and original part number and do not apply to other 3.6L/diesel/options without a label match.
- Genuine Mopar 68269523AD external fuel-pump-relay wiring kit
Selected 2011 Ram 1500 4.7L/5.7L 4WD configurations shown by the OE catalog; confirm VIN and wiring instructions. Do not generalize to 2012-2018.
As an Amazon Associate, we earn from qualifying purchases; other part links may also earn au7o a commission. Confirm fitment by VIN before buying.
Owner tips & cautions
- WarningThis is a high-severity issue - ignoring it can lead to costly repairs or safety concerns. Address it promptly.
- TipConsider OEM parts for critical components like sensors and electrical parts - aftermarket can be unreliable
- TipGet a proper diagnosis before replacing parts - similar symptoms can have different causes
Sources for this issue (6)
- RamForumz: TIPM Fuel Pump Failure, Repair, & Subsequent Problemsforum
- RamForum: Fuel pump or relay (TIPM) problem how to tell?forum
- RamForum: RAM TIPM FUEL PUMP RELAYforum
- Vertical Visions: TIPM Fuel Pump Relay Solutionsmanufacturer
- MAKS TIPM Rebuilders: Fuel pump relay issues in the TIPM for MOPARmanufacturer
- Vertical Visions: Ram 1500 TIPM solutionsmanufacturer
P0231 code reference
General diagnostic-code context. The code alone does not confirm a cause for your vehicle; use the applicable issue card and its sources.
Frequently asked questions
What does P0231 mean on a RAM?
P0231 stands for "Fuel Pump Secondary Circuit - Low." This code indicates the engine computer detected a low-voltage condition in the fuel pump's secondary (driver/output) control circuit. Many vehicles control the fuel pump through a relay or a dedicated driver module, and the computer monitors the voltage on that circuit to confirm the pump is being powered correctly. When the feedback voltage stays lower than expected, P0231 sets. Because the fuel pump supplies pressurized fuel to the injectors, this fault can cause hard starting, stalling, or no-start conditions. On RAM it is documented across 1 model: 1500.
What are the most common causes of P0231?
The most common causes of P0231 are: Faulty fuel pump relay, Corroded or loose connector at the pump or relay, Damaged or shorted wiring in the pump power circuit, Poor ground for the fuel pump circuit, Failing fuel pump drawing abnormal current, Faulty fuel pump driver module, PCM/ECM internal driver fault (rare). The specific cause varies by vehicle.
How much does it cost to fix P0231 on a RAM?
Published repair estimates on RAM range from $50 to $1,200 depending on the model and root cause. If an issue mentions a recall or campaign, check your VIN with the manufacturer or NHTSA and confirm eligibility and coverage with a dealer.
Looking for P0231 on a different make?
View P0231 across all makes →Content compiled with AI assistance using NHTSA complaints, TSBs, and owner reports. May contain errors. Always verify with your vehicle's service manual.