Technical Service Bulletins according to the NHTSA. Check service book:
The 8th generation Honda Civic is generally a dependable car but there are some noteworthy issues to look out for, particularly on the 2006 R18A1-powered models. The most alarming issue is the aluminum alloy engine block that is susceptible to cracking without warning or error signals. No recall was issued for the Honda Civic's cracked engine block, but it's an issue that was so severe that it pushed the brand to extend the powertrain warranty to 10 years with unlimited mileage. It is understood that most Civics of this generation have had this issue resolved, but some existing owners note that the issue still stands. Honda has not declared what caused this concerning issue but it could be due to a manufacturing defect that causes the block to overheat. To prevent this, keep a close eye on the coolant and oil levels. Some mechanical engine-block, head-gasket, overheating, and coolant problems are prevalent on 2006 and 2007 Honda Civic models but not so much on the 2008, 2009, and 2010 models.
Owners of this generation have also become frustrated with flailing Honda Civic sun visor problems to the point where a class-action lawsuit was issued for affected units. There is no recall for the Honda Civic's visor, but you may need to look at replacing this during your ownership experience with a replacement part that will cost about $50 excluding installation.
An additional class-action lawsuit was issued for 2006 and 2007 Civic models that relate to premature brake pad wearing that suggests the manufacturer installed a rear upper control arm that is too short and subjects the rear tire to misalignment. This also results in rear tire wear problems for the 2006 and 2008 Honda Civic models. No recall for the Honda Civic's rear control arm, brakes, or wheel bearing was issued, but to resolve this, you'll need to replace the rear control arms with a correct unit that costs $176.
The eighth-generation 2006 - 2011 Honda Civic recalls are abundant, mainly because it was the unfortunate victim of the Takata airbag recall. The 2006 model is subject to 15 recalls six of which are due to the faulty airbag. It was also recalled for an untrustworthy steering column due to a manufacturing fault that saw an overuse of silicone grease. This would drip onto the brake light bulb switch resulting in an operational failure.
260,000 units produced in 2006 and 2007 were potentially affected by a rear-wheel speed sensor which can cause the wheel to fall off while driving. A total of 774 Honda Civic FG2 coupe units are affected by a recall that relates to a poor installation of the rear window and rear quarter-glass panel which can cause the part to separate from the car while driving. A small number of Civic units were also recalled for the installation of incorrect amber front and side reflectors that could decrease visibility to other drivers.
25,298 units of the 2006 model specifically were recalled for an incorrectly installed accelerator pedal that could disconnect from the floor mounting or could even cause the throttle to get stuck. A handful of 2008 and 2009 Honda Civic models were recalled for a fuel hose connector bracket that could loosen and result in a fuel leak. This is because assembly, a nut holding the component was not installed. The 2011 model was called back due to a fuel leakage issue as well due to improper ultrasonic welding of the plastic case that covers the fuel pump module.
31,123 Honda Civic Hybrids were recalled for the IMA battery terminal that may come into contact with the metal cover. This can lead to a catastrophic electrical shortage that can blow the fuse of the IMA which can bring the powertrain to a stall and increase the risk of crashing. A plastic cover is attached to the bracket to ensure that this contact isn't made.
2006 to 2011 Honda Civics, including the coupe and LX, were not subjected to belt-tensioner, overheating from a damaged head gasket, ignition switch, power-steering pump, starter, air-conditioning - or AC - compressor, transmission, wiper-motor, oil-leak, or water-pump recalls, despite the rare problem with some of these systems.
These are some fault codes that you may pick up on your 8th-generation Honda Civic:
- P000a refers to a slow timing response on bank one for the camshaft. The camshaft can be affected by a variety of issues, so if the engine control module detects this, it could be related to your Civic's oil pressure, camshaft sensor or accentuate, the valve adjustment, a faulty timing phaser or unit, damaged connection terminals, or a bad ECU.
- Code P0070 refers to a fault detected in the Honda Civic's ambient air temperature sensor circuit. If spotted, it means that the ambient and intake air temperatures are incorrect which is likely to trigger the Check Engine light. This could be caused by a failed air sensor, worn wires, corroded circuitry or connectors, an open or loose ambient air temperature harness, or foreign objects blocking the sensor.
- Code P0101 or P0102 is an indication that the mass or volume air flow circuit is suffering from a low input. This could be due to a faulty or dirty mass airflow sensor, a flaw with the air filter box or intake, leaks in the PCV system, or incorrect parts installed in the air intake system. The same resolution is needed for codes P0111 and P0113, which are indications that the engine control module is noting an incorrect reading for the air intake temperature.
- P0117 and P0118 mean that the engine coolant temperature sensor is detecting an incorrect temperature. P2185 means that an incorrect voltage is being noted. You may need to have a look at your coolant sensor or any other flaws in your cooling system.
- Code P0125 means that the Civic's ECU is not detecting an appropriate heat level in the cooling system. This could be due to a faulty coolant temperature sensor or an insufficient amount of coolant.
- The P0135, P0137, P0138, and P0139 codes mean that one of the banks of the oxygen heat sensor is malfunctioning. P0141 and P0155 mean that the heater element of the circuit that manages the heated oxygen sensor could be defective. An inspection of the detected sensor and its circuitry will need to be conducted.
- A fuel timing error will bring up the P0149 code. This could be due to a faulty fuel timing solenoid, misaligned timing marks on the mechanical sprockets, or a defective fuel pressure sensor, pump, or control actuator. You'll also need to inspect the lines for leaks.
- P0171, P0172, P0174, and P0175 mean that the fuel injection system is running too lean on one of the banks. Inspect the air intake for leaks or the condition of the front heated oxygen sensor. You can also inspect the fuel injectors, exhaust gas leaks, and fuel pressure.
- Codes P0300, P0301, P0302, P0303, and P0304 indicate that misfiring is detected from the cylinders. This could be due to faulty spark plugs or issues with the ignition, distributor, camshaft or crankshaft sensors, or a leaking head gasket. It's also worth inspecting the engine compression. The last digit in these codes indicates the number of the misfiring cylinder.
- If you see the P0335, P0339, P340, or P341 code, this is related to the crankshaft position sensor circuit. This could be due to damage sustained by the crankshaft-position sensor, reluctor rings, sprocket, or cam chain.
- P0365 indicates a lack of voltage from the B sensor of the camshaft position in the first bank. This could be due to a faulty position sensor.
- Code P0404 means that the exhaust gas recirculation valve or sensor is not adhering to the specification parameters. P0489 signifies that the recirculation of the exhaust gas is low. You'll have to inspect the components to ensure that there is no wear or damage.
- P0453 is an indication that there is a high voltage on the fuel tank pressure sensor. P145C means that the range or performance of the sensor is faulty. You may need to look at replacing the sensor or inspecting the harness and circuit connection.
- If there is a low voltage on the oxygen sensor circuit, the P0143 code will be displayed. To resolve this, you'll have to inspect the exhaust before the catalyst for leaks. The sensor's wiring may also need to be looked at.
- If you're suffering from a large leak in the evaporative emission-control (EVAP) system, the P0455, P0456, or P0457 codes will emerge. To resolve this, you might have to inspect the fuel cap, tank, or EVAP system for leaks. P0443 indicates a circuit malfunction for the EVAP's purge control valve. This could be due to a short in the wiring or a faulty valve.
- P0497 means that a low purge flow is being detected by the EVAP while P0496 detects a high purge flow. P0498 and P0499 mean that the EVAP's vent canister shut valve has been compromised. Both of these could be due to a faulty control solenoid valve, harness, or electrical connection.
- If your Honda Civic's powertrain is idling at a higher RPM than expected, you'll see the P0507 code. This could be due to an intake or vacuum air leak but a faulty idle air conditioner valve, electric throttle control actuator, or carbon buildup on the throttle body.
- The cold start idle air control system that is in charge of warming up the catalytic converter may be ineffective if you encounter the P050A code. This could be due to a clogged air filter, a failed idle air control valve, powertrain control module, or mass airflow sensor. The throttle body assembly or wiring could also be defective.
- If you encounter the P0533 code, this means your Civic's air conditioning refrigerant pressure is higher than what is safely advised. P0532 means it is too low. You may need to look at servicing your air conditioning system. There could also be damage to the electrical connection. Too much moisture in the system could also create blockages in the expansion valve.
- P0562 will indicate that vehicle's voltage is lower than the desired amount. This could be due to several factors relating to the Civic's electrical system, including a defective alternator, voltage regulator, or battery.
- Code P0606 means that there is a malfunction from the engine control module processor. P060A refers to an ECU power relay circuit malfunction. If the module itself is not damaged, you should inspect the power supply circuit or update the software.
- If there is a low voltage from the relay coil control circuit, code P0685 will display. The most common issue for this is a faulty relay but a blown fuse, faulty connection, or aged battery could also cause this.
- Automatic models that experience a transmission range sensor circuit malfunction will generate the P0705 code. P0706 and P0717 means that there is an issue with the transmission range switch or speed sensor. P0720 or P0722 reflects a malfunction with the output speed sensor circuit which results in inconsistent transmission shifting. These are likely due to a faulty sensor or switch, valve body, or transmission. You may also need to inspect the wiring or transmission fluid.
- P0128 indicates that the coolant thermostat is operating below the regulating temperature. It could likely be due to a faulty thermostat or coolant temperature sensor.
- P0087 means that the pressure on your fuel system is too low. Your Civic could be suffering from a clogged fuel filter, a failed fuel pump, or a restricted fuel line.
- If you come across the P0183 code, your fuel temperature sensor circuit is suffering from a high input. This could mean your sensor is faulty or its harness is opened or shortened. The electrical connection may also need to be inspected.
- A knock sensor circuit malfunction will bring up the P0325 code. This could be due to the sensor, an improper electrical correction, or a faulty ECU.
- P0332 refers to a low input being detected on the knock sensor 2 circuit on bank two and could mean that your powertrain is pinging. This would likely be due to a faulty knock sensor, a lean air-fuel ratio, or an issue with the cooling or exhaust gas recirculation system.
- Code P0420 and P0430 mean that there is an issue relating to the catalytic converter. This means that your catalytic converter is faulty or the oxygen sensor is damaged and delivering incorrect readings. Also, check the fuel system for leaks and the manifold for cracks.
- P0451 relates to the EVAP's pressure sensor range but will likely be due to a damaged gas tank or pressure sensor. The wiring surrounding the tank may also need to be inspected.
- The P0463 code means that a high input is being detected from the fuel level sensor and could provide an incorrect reading of the fuel level in your Honda Civic. To resolve this, inspect the fuel level sensor, pump, float, or gauge cluster for any faults. Your fuel tank could also be impaired.
- If you encounter the P0502 code, it means that a low input is being received from the vehicle speed sensor. Consider inspecting the sensor, hub bearings, ABS tone rings, or the engine control unit. The car could also be fitted with the incorrect tire size or a faulty instrument cluster.
- The P0718 code relates to an intermittent failure of the input shaft speed sensor. This could be caused by a faulty transmission speed sensor.
- Automatic Honda Civic models may reflect the P0741 code relating to the torque converter's clutch which may fail to engage. You'll come across the P0746 or P0962 code when there is a fault with the clutch pressure control solenoid valve. These could be due to a faulty transmission, solenoid, valve body, or transmission control unit.
- P0843, P0847, P0878, and P0848 mean that there is an issue with the transmission fluid pressure switch. This could likely be due to a contaminated or low level of transmission fluid. The pressure switch may also need replacing.
- The P0429 code means that there is a flaw with the catalyst heater control circuit. You'll have to inspect the temperature sensor to see if there are any damages or faults.
- Honda's P0713 code refers to a fault with the transmission fluid temperature sensor. This could be because of a damaged transmission or dirty fluids.
- Code P0732 means that an incorrect ratio is being noted for the second gear. You could be suffering from this because of low or contaminated transmission fluid.
- P0756 or P0776 means that a solenoid in the transmission is stuck or inactive. It could be experiencing this due to a low transmission fluid reading or other malfunctions related to the transmission.
- If you come across the P0812 code, it means the ECU has detected an issue with the reverse gear input circuit. Your Civic's reverse switch could likely be broken or the wiring may be damaged.
- The P1659 fault code will be displayed if the electronic throttle control system is malfunctioning. This is likely due to a faulty relay or poor electrical connection.
- P0001 is the code you'll get if there is an issue with the fuel volume regulator control circuit. You could be experiencing this if the plug to the fuel regulator is disconnected. It could also be due to corrosion in the sensor connector.
- If your Civic sustains an ignition coil circuit malfunction, you'll encounter the P0351 or P0352 code. This means you may have to replace the ignition coil or spark plug. There could also be a vacuum leak in the intake manifold or carbon buildup in the throttle body.
- P1129 means that your manifold absolute pressure sensor circuit is reading higher than expected. This could be due to a faulty sensor, harness, or electrical connection.
- P0AE1 refers to the Civic Hybrid in particular. This code means that there is an issue with the battery precharge contactor circuit which could be due to a faulty system main relay.
- The P1077 code signifies that the intake manifold runner control system is malfunctioning at a low RPM. This may mean you'll have to repair or replace the intake manifold runner control valve, harness, or electrical connection.
- An engine overspeed condition from your Honda Civic will bring up the P0219 fault code. This is brought up due to a faulty engine speed sensor or engine control unit but it is a fault that is common among younger drivers with little mechanical sympathy.