P2670Engine
Actuator Supply Voltage B Circuit Low
P2670 means the B actuator supply voltage circuit is lower than expected, which can affect several actuators that share that power feed.
🚗 Often drivable but can affect multiple actuators sharing the supply. Get it diagnosed to avoid stalling or driveability faults.
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🎯 Top Causes, Ranked by Likelihood
#1Short to ground in supply wiring$100-$400
A shorted feed pulls the supply voltage low.
#2Failed relay or fuse$20-$120
A bad relay or fuse reduces supply voltage.
#3Poor ground or connection$80-$250
High resistance drops the supply voltage.
#4ECM internal fault$500-$1200
The module supply driver has failed.
🩺 Common Symptoms
- Check engine light
- Multiple actuator codes
- Driveability issues
- Possible stalling
💰 Repair Cost: DIY vs Shop
📋 Free OBD2 Code Cheat Sheet
The 50 most common codes with likely cause and DIY fix cost. Sent once, no spam.
🔧 How to Diagnose P2670
1Check the actuator supply fuse and relay
2Inspect wiring for shorts to ground
3Measure supply voltage at the actuators
4Verify power and ground at the ECM
❓ Frequently Asked Questions
Can I drive with P2670?
Sometimes, but a low actuator supply can cause several systems to misbehave, so get it checked.
What is actuator supply B?
It is a shared power feed that supplies voltage to a group of output actuators.
How much to fix P2670?
Wiring or relay fixes are often under $200; module issues cost much more.
🔗 Related Codes
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