Dodge Viper (2008-2017) Engine Oil Pressure Switch: A Complete Guide
Understanding the signs of a failing oil pressure sensor and how to choose the right replacement for your V10.
- A faulty oil pressure sensor is a known issue, addressed by Chrysler TSB 18-034-14 for the P0520 code.
- Symptoms often include an erratic gauge reading (pegged high or low) and a check engine light, not necessarily a true oil pressure problem.
- Replacement is a manageable DIY task, with the sensor located on the passenger side of the engine block near the alternator.
- When replacing, ensure you get the updated OEM part (5149064AB) or a quality aftermarket equivalent to prevent future failures.
Is Your Viper's Oil Pressure Gauge Acting Strange?
If you own a 2008-2017 Dodge Viper, you know how important it is to monitor your engine's health. The oil pressure sensor is a small but vital component. When it fails, it can cause serious concern, but the fix is often straightforward. A faulty sensor can give false readings, making you think you have a major engine problem when you don't.
Symptoms of a Failing Oil Pressure Switch
A bad oil pressure sensor can mimic the signs of a serious engine issue. Before you panic, check if the sensor itself is the culprit. Common symptoms include:
- Erratic Gauge Readings: The oil pressure gauge on your dashboard may jump around, read zero, or be pegged at its maximum reading (e.g., 100+ psi), even at idle.
- Incorrect Pressure with Engine Off: Some owners report the gauge showing pressure (e.g., 25-50 psi) with the key in the 'on' position but the engine not running.
- Oil Pressure Warning Light: The red oil warning light may illuminate or flicker on your dashboard.
- Check Engine Light: A failure in the sensor's circuit will often trigger a Check Engine Light. The most common trouble code is P0520.
- Oil Leaks: The sensor itself can fail and leak oil. You may notice drips under the car near the front of the engine.
Known Issue: TSB for P0520 Code
Chrysler issued Technical Service Bulletin (TSB) 18-034-14 for multiple vehicles, including the 2013-2014 Viper, for the Diagnostic Trouble Code (DTC) P0520. This TSB involves replacing the original oil pressure sensor with a revised part to correct the issue. This indicates that sensor failure is a recognized problem.
Choosing the Right Aftermarket Part
For a critical sensor on a Viper, part quality matters. While OEM Mopar parts are always a safe bet, several reputable aftermarket brands offer quality replacements that meet or exceed original specifications.
- Tier 1 (Professional Grade): Standard Ignition (SMP) is a well-regarded brand, known for producing high-quality electronic components and sometimes serving as the original equipment manufacturer. They are often a top choice for professional mechanics.
- Tier 2 (Standard Replacement): Walker Products and Holstein are established aftermarket brands that produce a wide range of sensors. They offer a balance of quality and value, designed as direct-fit replacements.
- Tier 3 (Specialty): Crown Automotive is a brand known primarily for its extensive catalog of Jeep parts, but it also provides components for other Mopar vehicles like the Viper. They can be a good source for Mopar-specific applications.
Pro Tip: Given the TSB, it's wise to ensure any replacement part, whether OEM or aftermarket, is the latest revised version. The OEM part number 5149064AB is the updated version that supersedes older parts.
Cost of Replacing a Dodge Viper Oil Pressure Switch
| Part Type | Estimated Cost |
|---|---|
| New Aftermarket Part | $40 - $57 |
| New OEM (Mopar) Part | $45 - $80 |
| Shop Labor | $100 - $200 |
| Total (Aftermarket Part + Labor) | $140 - $257 |
Frequently Asked Questions
Where is the oil pressure switch located on a 2008-2017 Viper?
The oil pressure sensor is located on the front, passenger side of the engine block, near the alternator. It is typically accessible from underneath the car or from the side, though it can be a tight fit.
Can I replace the oil pressure switch myself?
Yes, this is a DIY-feasible job for someone with basic mechanical skills. It involves disconnecting the electrical connector, and then using a special deep socket for oil pressure switches to remove the old unit. Make sure the engine is cool and be prepared for a small amount of oil to spill. Always check the new part's threads and use a torque wrench for installation if specs are available.
Is there a recall for the oil pressure switch?
No, there are no active recalls for the engine oil pressure switch on the 2008-2017 Dodge Viper. However, a Technical Service Bulletin (TSB) was issued for the P0520 trouble code, which recommends replacing the sensor.
Should I use an OEM or Aftermarket sensor?
For a car like the Viper, many owners prefer OEM Mopar parts. However, top-tier aftermarket brands like Standard Ignition are known for their quality and are a reliable alternative. Given the known issues with the original sensor, an updated OEM part or a quality aftermarket equivalent are both good choices.
Technical Specifications
OEM Part Numbers: 5149064AB 5149064AA 56028807AB
The sensor for the 2008-2017 Dodge Viper is a 3-pin electronic sensor that reads pressure and sends a variable signal to the ECU and gauge.
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The information in this article is provided for general reference and educational purposes only. Vehicle specifications, procedures, and part compatibility can vary by production date, trim level, and region. Always consult your vehicle's factory service manual and verify part numbers before purchasing or performing repairs. Safety-critical components such as airbags, seat belts, and braking systems should be installed by a qualified professional.
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