Error code
OBD2 P2042
OBD2P2042
Diagnostic Trouble Code· Standard OBD-II fault code read from the vehicle's onboard diagnostics.
What it means
Reductant Temperature Sensor Circuit.
Severity
moderateCan continue driving but may cause emission problems.
Summary
P2042 indicates an issue with the reductant temperature sensor circuit, which is part of the engine's emissions system.
Common Causes
- Wiring issues
- Faulty reductant temperature sensor
Fixes
- Replace the faulty reductant temperature sensor or repair wiring issues.
FAQ
What does P2042 mean?
P2042 indicates a malfunction in the circuit of the reductant temperature sensor, which is part of your vehicle's emissions system.
How do I fix P2042?
You may need to replace the faulty reductant temperature sensor or repair any wiring issues related to it.
Not affiliated with OBD2. Answer summarized from the manufacturer's manual linked above; consult that source for the authoritative procedure.
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