Shanghai Sedan C1396 Engine Trouble Code
What is Shanghai Sedan C1396?
The Shanghai Sedan C1396 check-engine light can indicate issues ranging from minor (loose gas cap) to serious (catalytic converter failure). Professional diagnostic scanning at a dealer or shop will identify the exact cause and required repairs.
C1396 on the Shanghai Sedan
The Shanghai Sedan ECU flash version prior to the 2.4.1 update has a known calibration bug that can generate spurious C1396 codes under hard deceleration. Verifying the ECU software version is always the first step before any mechanical diagnosis on this model.
Code Information
| Code Type: | OBD-II Chassis (C) Trouble Code |
| System: | Chassis |
| Vehicle: | Shanghai Sedan |
| Brand: | Shanghai |
| Model: | Sedan |
| Code: | C1396 |
C1396 Shanghai Sedan Symptoms
Check Engine Light
Illuminated Shanghai Sedan dashboard warning
Engine Stalling
Engine stops unexpectedly or misfires
Performance Issues
Reduced power or acceleration on the Shanghai Sedan
Starting Problems
Difficulty starting the engine
Poor Fuel Economy
Increased fuel consumption on the Shanghai Sedan
Increased Emissions
Failed emissions test due to C1396
C1396 Code Structure
Understanding what each digit means in the C1396 chassis trouble code:
| C | 1 | 3 | 9 | 6 |
|---|---|---|---|---|
| Chassis Code | Fuel And Air Metering | Throttle/Pedal Position Sensor/Switch A Circuit Intermittent | Crankshaft Position Sensor A Circuit Malfunction | Ignition Coil A Primary/Secondary Circuit Malfunction |
How to Fix Shanghai Sedan C1396
Diagnostic Steps:
Check if fuel pump primes when key is turned to ON. Measure fuel pressure and verify bright white-blue spark at all plugs. Also verify mechanical timing alignment.
Repair Solution:
Power steering pressure switch monitors system operation. If pressure changes are not detected after calibrated speed transitions, this DTC sets. Verify PSP switch operation and check for circuit opens or shorts.
Technical Notes:
C1396 DTCs can be triggered by upstream issues. For example, a dirty MAF sensor may cause incorrect fuel-trim adjustments, leading oxygen sensors to report mixture problems. Address root causes first.
Shanghai Sedan C1396 Repair Cost
Ground circuit repairs on the Shanghai Sedan — a common cause of C1396 — are labour-intensive but parts are cheap. Expect 1.5–2.5 hours of labour ($120–$200) to clean, treat, and re-torque all engine and transmission ground straps. This is excellent value given how often it resolves persistent fault codes.
C1396 Description
C1396 engine trouble code is related to Ignition Coil A Primary/Secondary Circuit Malfunction.
Main Cause
The primary reason for C1396 OBD-II Engine Trouble Code is: Throttle/Pedal Position Sensor/Switch A Circuit Intermittent.
Common C1396 Misdiagnosis on the Shanghai Sedan
A common error on the Shanghai Sedan is attributing C1396 to the crankshaft position sensor when the real fault is a damaged flywheel ring gear. The missing tooth pattern created by ring gear damage is intermittent and generates the same signal anomaly.
DIY Repair Guide: C1396 on Shanghai Sedan
Replacing the spark plugs on the Shanghai Sedan is rated a difficulty 2/5 for home mechanics. The top-mounted plug access on this engine requires a 3/8" extension and a 14mm spark plug socket. Always torque to the manufacturer's specification to avoid cracking the cylinder head.
Preventing C1396 on the Shanghai Sedan
Keeping the Shanghai Sedan battery in good health — testing specific gravity annually and replacing at first sign of degradation — protects the ECU voltage supply. Voltage drops during cranking cause sensor reading spikes that can spuriously store C1396.
Frequently Asked Questions — Shanghai Sedan C1396
A: Contaminated or low-octane fuel can temporarily trigger C1396 through knock retard and lean/rich excursion events. If the code appeared shortly after a fill-up at an unfamiliar station, running the tank close to empty and refuelling with premium is a sensible first step.