Fuel Injection Pump Speed/Timing Sensor Circuit Intermittent
The P2379 code means the vehicle's onboard diagnostic system has detected: Fuel Injection Pump Speed/Timing Sensor Circuit Intermittent. This is a serious severity code.
- Keep driving?
- Short distances only
- DIY difficulty
- hard
- Estimated cost
- $300 - $1,500 (parts and labor)
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What Are the Symptoms of P2379?
- Check Engine Light on
- Engine hard starting or no start condition
- Rough idle and engine knocking
- Excessive smoke from exhaust
- Significant power loss
What Causes P2379? (Most Likely First)
- Loose sensor connector at fuel injection pump Very High
- Chafed or damaged wiring in pump harness High
- Failing pump speed/timing sensor Moderate
- PCM connector pin issue Low
Can I Still Drive with P2379?
Short distances only. P2379 is rated serious severity. Keep trips short and get it diagnosed soon rather than waiting for symptoms to worsen.
Frequently Asked Questions
What does P2379 mean?
P2379 relates to the fuel injection pump system: Fuel Injection Pump Speed/Timing Sensor Circuit Intermittent. This code is most commonly seen on diesel vehicles where precise pump timing is critical.
Can I drive with P2379?
Drive only short distances to a shop. Fuel injection pump issues can cause hard starting, poor performance, and potential engine damage from incorrect timing.
How much does it cost to fix P2379?
Costs range from $300 for sensor or wiring repairs to $1,500+ if the injection pump itself needs replacement or rebuilding.
Mechanics Guide Step-by-step diagnosis
How Do You Diagnose P2379?
-
Retrieve P2379 and check for related fuel system codes
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Monitor injection pump timing and speed data with a scan tool
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Inspect injection pump sensor wiring and connectors for damage
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Verify injection pump timing alignment marks are correct
Sources 1
This page is built from documented references. Verify against your own service info before repair work.
- SAE J2012Diagnostic Trouble Code Definitions (defines the generic OBD-II code ranges)
Which Vehicles Commonly Get P2379?
- 2012-2019 Chevrolet Silverado 1500 5.3L V8
- 2011-2017 BMW 328i 3.0L I6
- 2008-2016 Honda Accord 2.4L I4
- 2014-2022 Ford F-150 5.0L V8
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