OBD Starter Relay B Circuit High
What it means
P26E6 stands for Starter Relay B Circuit High. P26E6 is a P code, so the fault sits in the engine, transmission and emissions systems. For P26E6, the second digit places it in computer output circuits. For P26E6, work through the cause list below, cheapest checks first.
Where it lives
For P26E6, the relay sits on the circuit this code reports. The description of P26E6 reports a fault at the relay.
What to check first
For P26E6, pull the connector and inspect the terminals for spread, corrosion or backed-out pins before testing anything else.
Check these first
- P26E6: Faulty sensor or actuator in the control circuit
- P26E6: Wiring, connector, or fuse problem for the affected output
- P26E6: Low or unstable system voltage from the battery or charging system
- P26E6: Failed PCM/ECM or a software error
- P26E6: Poor ground connection for the control module
What to do next
P26E6 belongs to the computer output circuits system. These are the general steps for P26E6, and the exact cause on your vehicle can differ.
- P26E6: Verify battery voltage and charging system health first
- P26E6: Read all related module codes with an OBD-II scanner
- P26E6: Inspect wiring, connectors, and grounds for the affected circuit
- P26E6: Test the sensor or actuator with live data and actuation commands
- P26E6: Check for PCM software updates or TSBs before replacing modules
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Updated
Generic SAE J2012 definition. Last updated 2026-08-30.