Fuel
Petrol fault-code cases
Real diagnoses on petrol cars.
34 cases
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Diagnosing a 2-Bar Fuel Pressure Swing on a Porsche Panamera
Explore a real diagnostic case on a 2009 Porsche Panamera 970 with a cyclic idle misfire, fuel pressure swings, and P0421/P0431 fault codes. -
Diagnosing P06DA00, B275013, and B005013 on a Mercedes-Benz GLA
Diagnostic guide for a 2014 Mercedes-Benz GLA (X156) presenting with SRS open circuit codes B275013 and B005013, alongside a silent P06DA00 oil pump fault. -
Diagnosing P0421 and P0401 After an Engine Swap on a 2016 Outlander
A 2016 Mitsubishi Outlander presented with a rough hot idle and codes P0421 and P0401 after an engine swap. We trace the faults to reused overheated parts. -
Diagnosing P0014 on the KIA Rio 1.2 CVVT
A real diagnostic case study covering a P0014 fault on a 2016 KIA Rio 1.2 CVVT. We break down the top causes, from stuck OCVs to timing chain stretch. -
Diagnosing a Solitary P2097 Code on a 2015 Cadillac ATS
A solitary P2097 code on a 2015 Cadillac ATS points to a rich condition. Learn why leaking direct injectors and EVAP faults cause this before replacing sensors. -
Diagnosing a VW Caddy P2432 and High Injector Correction
A 2011 VW Caddy showed a rough idle, a P2432 secondary air code, and a high cylinder three correction value that a new injector could not fix. -
Diagnosing P0366 on a 2019 Jaguar F-Pace
Explore a real diagnostic case of a P0366 camshaft position sensor code on a 2019 Jaguar F-Pace, covering wiring, tone rings, and VVT system failures. -
Diagnosing Unrelated Codes on a 2010 VW Passat
A step-by-step diagnostic breakdown of a 2010 VW Passat 1.4 TSI with codes P10A0, P0568, and P1698, featuring engine clicking and steering column faults. -
Diagnosing P0014 on a 2015 Peugeot 208 I
A detailed look at diagnosing a P0014 exhaust camshaft timing code on a Peugeot 208 1.2 PureTech, exploring VVT solenoid issues and wet timing belt degradation. -
Diagnosing P0299 on a 2018 KIA Stonic 1.0 T-GDi
A step-by-step diagnostic guide for a P0299 underboost code on a 2018 KIA Stonic, analyzing the probability of boost leaks, wastegate issues, and turbo failure. -
Diagnosing a Ghost P0300 on a 2003 Silverado
When a 2003 Chevrolet Silverado 1500 logs a P0300 in history but shows no active misfires, diagnosing the root cause requires a structured approach. -
Diagnosing P0090 on the Nissan 1.2 DIG-T: Solenoid vs Harness
Discover how to diagnose a P0090 fault code on a Nissan Qashqai 1.2 DIG-T. We break down the probabilities between fuel pump solenoids and wiring harnesses. -
Diagnosing P0299 and P2015 on a Volkswagen Golf VI
A 2010 VW Golf VI presented with P0299 underboost and P2015 intake flap codes. Learn how to separate the faults and test the wastegate and G336 sensor. -
Diagnosing P164E and a Burnt Oil Smell on a 2018 Golf VII
A technical breakdown of diagnosing a P164E fault code and burnt oil smell on a 2018 VW Golf VII. Exploring N428 valve failure, harness issues, and O-ring leaks. -
Diagnosing P2006 on a 2007 VW Golf 1.4 TSI
A Swedish workshop faced a P2006 code on a 2007 VW Golf 1.4 TSI with only a check engine light. Here is how Wrenchlane ranked the swirl flap faults. -
Diagnosing P20D4 on a 2001 Mercedes SL M113
Why a generic P20D4 code on a 2001 Mercedes SL M113 points to a load limit active state triggered by the MAF, MAP, or throttle body, not a diesel injector. -
Diagnosing a P0016 Timing Correlation Fault on a 2016 Vauxhall Corsa E
Explore a real diagnostic case of a P0016 fault code on a 2016 Vauxhall Corsa E. We break down timing chain wear, VVT solenoid failures, and oil degradation. -
Diagnosing a P0350 Code on a Toyota C-HR
A diagnostic breakdown of a P0350 ignition coil circuit fault on a 2016 Toyota C-HR, covering coil failures, wiring issues, and common ground faults. -
Diagnosing a P0456 EVAP Leak on a 2013 Lexus LX570
A 2013 Lexus LX570 arrived with a P0456 very small EVAP leak code. See how we rank the fuel cap, vapor lines, and solenoids to speed up the diagnosis. -
Diagnosing P0299 and Coolant Loss on a 2020 VW Passat
Explore a concrete diagnostic case on a 2020 VW Passat 1.5 TSI where a P0299 underboost code and coolant loss point to hidden secondary damage. -
P04AF00 and Blocked OPF Regeneration on the Audi Q8
How an active P04AF00 EVAP fault code on a 2020 Audi Q8 4.0 TFSI completely blocks particulate filter regeneration, and how to trace the root cause. -
Decoding a Multi-System Cascade on a 1.8 TSI
A step-by-step breakdown of how a 2009 SKODA Superb II with a 1.8 TSI engine triggers intake manifold, EVAP, and oxygen sensor faults simultaneously. -
Diagnosing Intermittent P030100-P030400 Misfires
How to diagnose intermittent multi-cylinder misfires (P030100-P030400) on a 2010 Volkswagen Touran, moving beyond coils to find the real root cause. -
Diagnosing a P0033 Code on a 2020 MG ZS
A detailed look at diagnosing a P0033 turbocharger bypass valve control circuit fault on a 2020 MG ZS, covering solenoids, wiring, and mechanical binding.