P0299
P0420
P0401
P2015
P0171
P0300
P2002
P2463
P0101
P0234
P0087
P0016
P0130
P0340
P0403
P0441
P0507
P0671
P2187
P2279
P2452
P0113
P0128
P0191
P0301
P0402
P0480
P1640
P20EE
U0100
OBD-II / EOBD Diagnostic Trouble Code Database • Code P0234
OBD-II Fault Code P0234: Turbocharger / Supercharger Overboost Condition (Boost Pressure Exceeded)
⚠️ Common Symptoms & Driving Behavior
During hard acceleration (e.g., overtaking uphill in 4th/5th gear), the engine suddenly drops into limp mode; cycling the ignition temporarily restores power.
🔧 Most Common Causes & Repair Guide (P0234)
1. Carbon-fouled and sticking variable geometry turbo vanes (VNT) • 2. Faulty N75 boost control solenoid valve • 3. Faulty Manifold Absolute Pressure (MAP) boost sensor.
Most Searched Vehicle Engines & Data Cards:
Škoda • 1988 – 2001
Škoda Felicia (6U) & Favorit / Forman – 1.3 / 1.3 BMM / 1.3 MPI (40 kW / 54 HP)
Codes: 135B, AMG, AMJ • Oil: 4,0 l (1.3 OHV / BMM / MPI) / 3,5 l (1.6 MPI AEE) / 4,5 l (1.9 D AEF)
Škoda • 1988 – 2001
Škoda Felicia (6U) & Favorit / Forman – 1.3 / 1.3 BMM / 1.3 MPI (50 kW / 68 HP)
Codes: 136B, AMH, 781.136M • Oil: 4,0 l (1.3 OHV / BMM / MPI) / 3,5 l (1.6 MPI AEE) / 4,5 l (1.9 D AEF)
Škoda • 1988 – 2001
Škoda Felicia (6U) & Favorit / Forman – 1.6 MPI (55 kW / 75 HP)
Codes: AEE • Oil: 4,0 l (1.3 OHV / BMM / MPI) / 3,5 l (1.6 MPI AEE) / 4,5 l (1.9 D AEF)
Škoda • 1988 – 2001
Škoda Felicia (6U) & Favorit / Forman – 1.9 D (47 kW / 64 HP – naturally aspirated diesel)
Codes: AEF • Oil: 4,0 l (1.3 OHV / BMM / MPI) / 3,5 l (1.6 MPI AEE) / 4,5 l (1.9 D AEF)
Škoda • 2001 – 2008
Škoda Superb I (3U) – 1.9 TDI PD (74 kW / 100 HP)
Codes: ATD, AXR • Oil: 4,3 liters
Škoda • 2001 – 2008
Škoda Superb I (3U) – 1.9 TDI PD (77 kW / 105 HP)
Codes: BKC, BXE, BJB, BLS • Oil: 4,3 liters
Škoda • 2001 – 2008
Škoda Superb I (3U) – 1.9 TDI PD (96 kW / 130 HP)
Codes: ASZ, AWX, AVF • Oil: 4,3 liters
Škoda • 2001 – 2008
Škoda Superb I (3U) – 2.0 TDI (81 kW / 110 HP)
Codes: CFHF, CLCA • Oil: 4,3 liters