P2054: Reductant Injection Valve Circuit Low Bank 1 Unit 2
What to do
Inducement deadline applies. A non-dosing injector is also an uncooled one, so this is worth prompt attention.
What this code means
The bank 1 unit 2 injector circuit reads below its valid range, normally a short to ground, and the module shuts that driver down. The cooling consequence under P2048 applies to this injector as it does to any other.
Likely causes
Start here
- Wiring shorted to ground · moderate
- Faulty reductant injector · specialist
- Road damage to underfloor wiring · moderate
Less common
- Corroded or loose connector · easy
Symptoms
Components involved
Information, not instruction
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Have anything you intend to act on checked by a trained person against the manufacturer's own procedure for your vehicle. Nothing here replaces that procedure.
Community experience
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Nothing posted about this yet. Whatever you found is worth writing down — even a dead end saves someone the same afternoon.
What makes one worth reading:
- The car — make, model, year and engine. The same fault behaves differently on each.
- What you measured, not only what you replaced.
- What actually fixed it — or that nothing did, which is worth knowing too.
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