OBD Knowledge

Discover everything you need to know about OBD codes in OBDCodex’s OBD Knowledge category, covering OBD2 codes for newer vehicles and OBD1 code lists for older models.

p0018

P0018 Code: Crankshaft Position – Camshaft Position Correlation (Bank 2 Sensor A)

OBD CodexApr 22, 20248 min read
P0018 Code: Crankshaft Position – Camshaft Position Correlation (Bank 2 Sensor A) If you’ve encountered the P0018 code during a scan of your vehicle’s onboard diagnostic system, fret not! We’re here to discuss its meaning and implications. So, what does the code P0018 mean? In simple terms, it points to a potential issue with the […]
p2006

P2006 Code: Intake Manifold Runner Control Stuck Closed Bank 1

OBD CodexApr 22, 20248 min read
P2006 Code: Intake Manifold Runner Control Stuck Closed Bank 1 If you’ve encountered the P2006 trouble code on your vehicle, it’s essential to address it promptly to ensure optimal engine performance. The P2006 code specifically relates to the intake manifold runner control circuit and indicates that the intake manifold runner flap for bank 1 is […]
P0151 Code: Understanding O2 Sensor Circuit Low Voltage

P0151 Code: Understanding O2 Sensor Circuit Low Voltage

OBD CodexApr 22, 20247 min read
P0151 Code: Understanding O2 Sensor Circuit Low Voltage Welcome, fellow car enthusiasts! Today, we explore a common trouble code in automotive diagnostics that can be puzzling: P0151.  If you’ve ever seen the check engine light illuminate, connected a scanner, and wondered about the meaning behind the P0151 code that has just appeared, you’ve come to […]
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P0335 – Crankshaft Position Sensor “A” Circuit

OBD CodexApr 22, 20246 min read
The P0335 code indicates a circuit malfunction in the bank 1 crankshaft position sensor, one of the more critical sensors in many engines. It can influence the timing of your spark plug firing, and if this gets off, it can lead to misfires. Fixing the P0335 trouble code is important, and you want to do […]
p20b9

P20B9 Code: Understanding Reductant Heater Issues & Solutions

OBD CodexApr 22, 20247 min read
P20B9 Code: Understanding Reductant Heater Issues & Solutions Suddenly encountering the dreaded P20B9 code? No worries. We’re here to help! The P20B9 code specifically refers to the Reductant Heater ‘A’ Control Circuit/Open. But what does that really mean for your vehicle?  In this article, we’ll provide a clear explanation of the P20B9 code, its severity, […]